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<FONT color="green">001</FONT>    /**   <a name="line.1"></a>
<FONT color="green">002</FONT>     * Copyright 2011 The Buzz Media, LLC<a name="line.2"></a>
<FONT color="green">003</FONT>     * <a name="line.3"></a>
<FONT color="green">004</FONT>     * Licensed under the Apache License, Version 2.0 (the "License");<a name="line.4"></a>
<FONT color="green">005</FONT>     * you may not use this file except in compliance with the License.<a name="line.5"></a>
<FONT color="green">006</FONT>     * You may obtain a copy of the License at<a name="line.6"></a>
<FONT color="green">007</FONT>     *<a name="line.7"></a>
<FONT color="green">008</FONT>     *   http://www.apache.org/licenses/LICENSE-2.0<a name="line.8"></a>
<FONT color="green">009</FONT>     *<a name="line.9"></a>
<FONT color="green">010</FONT>     * Unless required by applicable law or agreed to in writing, software<a name="line.10"></a>
<FONT color="green">011</FONT>     * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.11"></a>
<FONT color="green">012</FONT>     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.12"></a>
<FONT color="green">013</FONT>     * See the License for the specific language governing permissions and<a name="line.13"></a>
<FONT color="green">014</FONT>     * limitations under the License.<a name="line.14"></a>
<FONT color="green">015</FONT>     */<a name="line.15"></a>
<FONT color="green">016</FONT>    package org.imgscalr;<a name="line.16"></a>
<FONT color="green">017</FONT>    <a name="line.17"></a>
<FONT color="green">018</FONT>    import java.awt.Color;<a name="line.18"></a>
<FONT color="green">019</FONT>    import java.awt.Graphics;<a name="line.19"></a>
<FONT color="green">020</FONT>    import java.awt.Graphics2D;<a name="line.20"></a>
<FONT color="green">021</FONT>    import java.awt.Image;<a name="line.21"></a>
<FONT color="green">022</FONT>    import java.awt.RenderingHints;<a name="line.22"></a>
<FONT color="green">023</FONT>    import java.awt.Transparency;<a name="line.23"></a>
<FONT color="green">024</FONT>    import java.awt.color.ColorSpace;<a name="line.24"></a>
<FONT color="green">025</FONT>    import java.awt.geom.AffineTransform;<a name="line.25"></a>
<FONT color="green">026</FONT>    import java.awt.geom.Rectangle2D;<a name="line.26"></a>
<FONT color="green">027</FONT>    import java.awt.image.AreaAveragingScaleFilter;<a name="line.27"></a>
<FONT color="green">028</FONT>    import java.awt.image.BufferedImage;<a name="line.28"></a>
<FONT color="green">029</FONT>    import java.awt.image.BufferedImageOp;<a name="line.29"></a>
<FONT color="green">030</FONT>    import java.awt.image.ColorConvertOp;<a name="line.30"></a>
<FONT color="green">031</FONT>    import java.awt.image.ColorModel;<a name="line.31"></a>
<FONT color="green">032</FONT>    import java.awt.image.ConvolveOp;<a name="line.32"></a>
<FONT color="green">033</FONT>    import java.awt.image.ImagingOpException;<a name="line.33"></a>
<FONT color="green">034</FONT>    import java.awt.image.IndexColorModel;<a name="line.34"></a>
<FONT color="green">035</FONT>    import java.awt.image.Kernel;<a name="line.35"></a>
<FONT color="green">036</FONT>    import java.awt.image.RasterFormatException;<a name="line.36"></a>
<FONT color="green">037</FONT>    import java.awt.image.RescaleOp;<a name="line.37"></a>
<FONT color="green">038</FONT>    <a name="line.38"></a>
<FONT color="green">039</FONT>    import javax.imageio.ImageIO;<a name="line.39"></a>
<FONT color="green">040</FONT>    <a name="line.40"></a>
<FONT color="green">041</FONT>    /**<a name="line.41"></a>
<FONT color="green">042</FONT>     * Class used to implement performant, good-quality and intelligent image<a name="line.42"></a>
<FONT color="green">043</FONT>     * scaling and manipulation algorithms in native Java 2D.<a name="line.43"></a>
<FONT color="green">044</FONT>     * &lt;p/&gt;<a name="line.44"></a>
<FONT color="green">045</FONT>     * This class utilizes the Java2D "best practices" for image manipulation,<a name="line.45"></a>
<FONT color="green">046</FONT>     * ensuring that all operations (even most passed in {@link BufferedImageOp}s)<a name="line.46"></a>
<FONT color="green">047</FONT>     * are hardware accelerated if provided by the platform and host-VM.<a name="line.47"></a>
<FONT color="green">048</FONT>     * &lt;p/&gt;<a name="line.48"></a>
<FONT color="green">049</FONT>     * &lt;h3&gt;Image Proportions&lt;/h3&gt;<a name="line.49"></a>
<FONT color="green">050</FONT>     * All scaling operations implemented by this class maintain the proportions of<a name="line.50"></a>
<FONT color="green">051</FONT>     * the original image unless a mode of {@link Mode#FIT_EXACT} is specified; in<a name="line.51"></a>
<FONT color="green">052</FONT>     * which case the orientation and proportion of the source image is ignored and<a name="line.52"></a>
<FONT color="green">053</FONT>     * the image is stretched (if necessary) to fit the exact dimensions given.<a name="line.53"></a>
<FONT color="green">054</FONT>     * &lt;p/&gt;<a name="line.54"></a>
<FONT color="green">055</FONT>     * When not using {@link Mode#FIT_EXACT}, in order to maintain the<a name="line.55"></a>
<FONT color="green">056</FONT>     * proportionality of the original images, this class implements the following<a name="line.56"></a>
<FONT color="green">057</FONT>     * behavior:<a name="line.57"></a>
<FONT color="green">058</FONT>     * &lt;ol&gt;<a name="line.58"></a>
<FONT color="green">059</FONT>     * &lt;li&gt;If the image is LANDSCAPE-oriented or SQUARE, treat the<a name="line.59"></a>
<FONT color="green">060</FONT>     * &lt;code&gt;targetWidth&lt;/code&gt; as the primary dimension and re-calculate the<a name="line.60"></a>
<FONT color="green">061</FONT>     * &lt;code&gt;targetHeight&lt;/code&gt; regardless of what is passed in.&lt;/li&gt;<a name="line.61"></a>
<FONT color="green">062</FONT>     * &lt;li&gt;If image is PORTRAIT-oriented, treat the &lt;code&gt;targetHeight&lt;/code&gt; as the<a name="line.62"></a>
<FONT color="green">063</FONT>     * primary dimension and re-calculate the &lt;code&gt;targetWidth&lt;/code&gt; regardless of<a name="line.63"></a>
<FONT color="green">064</FONT>     * what is passed in.&lt;/li&gt;<a name="line.64"></a>
<FONT color="green">065</FONT>     * &lt;li&gt;If a {@link Mode} value of {@link Mode#FIT_TO_WIDTH} or<a name="line.65"></a>
<FONT color="green">066</FONT>     * {@link Mode#FIT_TO_HEIGHT} is passed in to the &lt;code&gt;resize&lt;/code&gt; method,<a name="line.66"></a>
<FONT color="green">067</FONT>     * the image's orientation is ignored and the scaled image is fit to the<a name="line.67"></a>
<FONT color="green">068</FONT>     * preferred dimension by using the value passed in by the user for that<a name="line.68"></a>
<FONT color="green">069</FONT>     * dimension and recalculating the other (regardless of image orientation). This<a name="line.69"></a>
<FONT color="green">070</FONT>     * is useful, for example, when working with PORTRAIT oriented images that you<a name="line.70"></a>
<FONT color="green">071</FONT>     * need to all be the same width or visa-versa (e.g. showing user profile<a name="line.71"></a>
<FONT color="green">072</FONT>     * pictures in a directory listing).&lt;/li&gt;<a name="line.72"></a>
<FONT color="green">073</FONT>     * &lt;/ol&gt;<a name="line.73"></a>
<FONT color="green">074</FONT>     * &lt;h3&gt;Image Quality&lt;/h3&gt;<a name="line.74"></a>
<FONT color="green">075</FONT>     * This class implements a few different methods for scaling an image, providing<a name="line.75"></a>
<FONT color="green">076</FONT>     * either the best-looking result, the fastest result or a balanced result<a name="line.76"></a>
<FONT color="green">077</FONT>     * between the two depending on the scaling hint provided (see {@link Method}).<a name="line.77"></a>
<FONT color="green">078</FONT>     * &lt;p/&gt;<a name="line.78"></a>
<FONT color="green">079</FONT>     * This class also implements the incremental scaling algorithm presented by<a name="line.79"></a>
<FONT color="green">080</FONT>     * Chris Campbell in his &lt;a href="http://today.java<a name="line.80"></a>
<FONT color="green">081</FONT>     * .net/pub/a/today/2007/04/03/perils-of-image-getscaledinstance.html"&gt;Perils of<a name="line.81"></a>
<FONT color="green">082</FONT>     * Image.getScaledInstance()&lt;/a&gt; article in order to give the best-looking<a name="line.82"></a>
<FONT color="green">083</FONT>     * results to images scaled down below roughly 800px in size (e.g. generating<a name="line.83"></a>
<FONT color="green">084</FONT>     * thumbnails that aren't blurry).<a name="line.84"></a>
<FONT color="green">085</FONT>     * &lt;p&gt;<a name="line.85"></a>
<FONT color="green">086</FONT>     * The results generated by imgscalr using this method, as compared to a single<a name="line.86"></a>
<FONT color="green">087</FONT>     * {@link RenderingHints#VALUE_INTERPOLATION_BICUBIC} scale operation look much<a name="line.87"></a>
<FONT color="green">088</FONT>     * better.<a name="line.88"></a>
<FONT color="green">089</FONT>     * &lt;p/&gt;<a name="line.89"></a>
<FONT color="green">090</FONT>     * Only when scaling using the {@link Method#AUTOMATIC} method will this class<a name="line.90"></a>
<FONT color="green">091</FONT>     * look at the size of the image before selecting an approach to scaling the<a name="line.91"></a>
<FONT color="green">092</FONT>     * image. If {@link Method#QUALITY} is specified, the best-looking algorithm<a name="line.92"></a>
<FONT color="green">093</FONT>     * possible is always used.<a name="line.93"></a>
<FONT color="green">094</FONT>     * &lt;p/&gt;<a name="line.94"></a>
<FONT color="green">095</FONT>     * Minor modifications are made to Campbell's original implementation in the<a name="line.95"></a>
<FONT color="green">096</FONT>     * form of:<a name="line.96"></a>
<FONT color="green">097</FONT>     * &lt;ol&gt;<a name="line.97"></a>
<FONT color="green">098</FONT>     * &lt;li&gt;Instead of accepting a user-supplied interpolation method,<a name="line.98"></a>
<FONT color="green">099</FONT>     * {@link RenderingHints#VALUE_INTERPOLATION_BICUBIC} interpolation is always<a name="line.99"></a>
<FONT color="green">100</FONT>     * used. This was done after A/B comparison testing with large images<a name="line.100"></a>
<FONT color="green">101</FONT>     * down-scaled to thumbnail sizes showed noticeable "blurring" when BILINEAR<a name="line.101"></a>
<FONT color="green">102</FONT>     * interpolation was used. Given that Campbell's algorithm is only used in<a name="line.102"></a>
<FONT color="green">103</FONT>     * QUALITY mode when down-scaling, it was determined that the user's expectation<a name="line.103"></a>
<FONT color="green">104</FONT>     * of a much less blurry picture would require that BICUBIC be the default<a name="line.104"></a>
<FONT color="green">105</FONT>     * interpolation in order to meet the QUALITY expectation.&lt;/li&gt;<a name="line.105"></a>
<FONT color="green">106</FONT>     * &lt;li&gt;After each iteration of the do-while loop that incrementally scales the<a name="line.106"></a>
<FONT color="green">107</FONT>     * source image down, an explicit effort is made to call<a name="line.107"></a>
<FONT color="green">108</FONT>     * {@link BufferedImage#flush()} on the interim temporary {@link BufferedImage}<a name="line.108"></a>
<FONT color="green">109</FONT>     * instances created by the algorithm in an attempt to ensure a more complete GC<a name="line.109"></a>
<FONT color="green">110</FONT>     * cycle by the VM when cleaning up the temporary instances (this is in addition<a name="line.110"></a>
<FONT color="green">111</FONT>     * to disposing of the temporary {@link Graphics2D} references as well).&lt;/li&gt;<a name="line.111"></a>
<FONT color="green">112</FONT>     * &lt;li&gt;Extensive comments have been added to increase readability of the code.&lt;/li&gt;<a name="line.112"></a>
<FONT color="green">113</FONT>     * &lt;li&gt;Variable names have been expanded to increase readability of the code.&lt;/li&gt;<a name="line.113"></a>
<FONT color="green">114</FONT>     * &lt;/ol&gt;<a name="line.114"></a>
<FONT color="green">115</FONT>     * &lt;p/&gt;<a name="line.115"></a>
<FONT color="green">116</FONT>     * &lt;strong&gt;NOTE&lt;/strong&gt;: This class does not call {@link BufferedImage#flush()}<a name="line.116"></a>
<FONT color="green">117</FONT>     * on any of the &lt;em&gt;source images&lt;/em&gt; passed in by calling code; it is up to<a name="line.117"></a>
<FONT color="green">118</FONT>     * the original caller to dispose of their source images when they are no longer<a name="line.118"></a>
<FONT color="green">119</FONT>     * needed so the VM can most efficiently GC them.<a name="line.119"></a>
<FONT color="green">120</FONT>     * &lt;h3&gt;Optimized Image Handling&lt;/h3&gt;<a name="line.120"></a>
<FONT color="green">121</FONT>     * Java2D provides support for a number of different image types defined as<a name="line.121"></a>
<FONT color="green">122</FONT>     * &lt;code&gt;BufferedImage.TYPE_*&lt;/code&gt; variables, unfortunately not all image<a name="line.122"></a>
<FONT color="green">123</FONT>     * types are supported equally in the Java2D rendering pipeline.<a name="line.123"></a>
<FONT color="green">124</FONT>     * &lt;p/&gt;<a name="line.124"></a>
<FONT color="green">125</FONT>     * Some more obscure image types either have poor or no support, leading to<a name="line.125"></a>
<FONT color="green">126</FONT>     * severely degraded quality and processing performance when an attempt is made<a name="line.126"></a>
<FONT color="green">127</FONT>     * by imgscalr to create a scaled instance &lt;em&gt;of the same type&lt;/em&gt; as the<a name="line.127"></a>
<FONT color="green">128</FONT>     * source image. In many cases, especially when applying {@link BufferedImageOp}<a name="line.128"></a>
<FONT color="green">129</FONT>     * s, using poorly supported image types can even lead to exceptions or total<a name="line.129"></a>
<FONT color="green">130</FONT>     * corruption of the image (e.g. solid black image).<a name="line.130"></a>
<FONT color="green">131</FONT>     * &lt;p/&gt;<a name="line.131"></a>
<FONT color="green">132</FONT>     * imgscalr specifically accounts for and automatically hands<a name="line.132"></a>
<FONT color="green">133</FONT>     * &lt;strong&gt;ALL&lt;/strong&gt; of these pain points for you internally by shuffling all<a name="line.133"></a>
<FONT color="green">134</FONT>     * images into one of two types:<a name="line.134"></a>
<FONT color="green">135</FONT>     * &lt;ol&gt;<a name="line.135"></a>
<FONT color="green">136</FONT>     * &lt;li&gt;{@link BufferedImage#TYPE_INT_RGB}&lt;/li&gt;<a name="line.136"></a>
<FONT color="green">137</FONT>     * &lt;li&gt;{@link BufferedImage#TYPE_INT_ARGB}&lt;/li&gt;<a name="line.137"></a>
<FONT color="green">138</FONT>     * &lt;/ol&gt;<a name="line.138"></a>
<FONT color="green">139</FONT>     * depending on if the source image utilizes transparency or not.<a name="line.139"></a>
<FONT color="green">140</FONT>     * &lt;p/&gt;<a name="line.140"></a>
<FONT color="green">141</FONT>     * This is a recommended approach by the Java2D team for dealing with poorly (or<a name="line.141"></a>
<FONT color="green">142</FONT>     * non) supported image types. More can be read about this issue &lt;a href=<a name="line.142"></a>
<FONT color="green">143</FONT>     * "http://www.mail-archive.com/java2d-interest@capra.eng.sun.com/msg05621.html"<a name="line.143"></a>
<FONT color="green">144</FONT>     * &gt;here&lt;/a&gt;.<a name="line.144"></a>
<FONT color="green">145</FONT>     * &lt;p/&gt;<a name="line.145"></a>
<FONT color="green">146</FONT>     * This is also the reason we recommend using<a name="line.146"></a>
<FONT color="green">147</FONT>     * {@link #apply(BufferedImage, BufferedImageOp...)} to apply your own ops to<a name="line.147"></a>
<FONT color="green">148</FONT>     * images even if you aren't using imgscalr for anything else.<a name="line.148"></a>
<FONT color="green">149</FONT>     * &lt;h3&gt;GIF Transparency&lt;/h3&gt;<a name="line.149"></a>
<FONT color="green">150</FONT>     * Unfortunately in Java 6 and earlier, support for GIF's<a name="line.150"></a>
<FONT color="green">151</FONT>     * {@link IndexColorModel} is sub-par, both in accurate color-selection and in<a name="line.151"></a>
<FONT color="green">152</FONT>     * maintaining transparency when moving to an image of type<a name="line.152"></a>
<FONT color="green">153</FONT>     * {@link BufferedImage#TYPE_INT_ARGB}; because of this issue when a GIF image<a name="line.153"></a>
<FONT color="green">154</FONT>     * is processed by imgscalr and the result saved as a GIF file (instead of PNG),<a name="line.154"></a>
<FONT color="green">155</FONT>     * it is possible to lose the alpha channel of a transparent image or in the<a name="line.155"></a>
<FONT color="green">156</FONT>     * case of applying an optional {@link BufferedImageOp}, lose the entire picture<a name="line.156"></a>
<FONT color="green">157</FONT>     * all together in the result (long standing JDK bugs are filed for all of these<a name="line.157"></a>
<FONT color="green">158</FONT>     * issues).<a name="line.158"></a>
<FONT color="green">159</FONT>     * &lt;p/&gt;<a name="line.159"></a>
<FONT color="green">160</FONT>     * imgscalr currently does nothing to work around this manually because it is a<a name="line.160"></a>
<FONT color="green">161</FONT>     * defect in the native platform code itself. Fortunately it looks like the<a name="line.161"></a>
<FONT color="green">162</FONT>     * issues are half-fixed in Java 7 and any manual workarounds we could attempt<a name="line.162"></a>
<FONT color="green">163</FONT>     * internally are relatively expensive, in the form of hand-creating and setting<a name="line.163"></a>
<FONT color="green">164</FONT>     * RGB values pixel-by-pixel with a custom {@link ColorModel} in the scaled<a name="line.164"></a>
<FONT color="green">165</FONT>     * image. This would lead to a very measurable negative impact on performance<a name="line.165"></a>
<FONT color="green">166</FONT>     * without the caller understanding why.<a name="line.166"></a>
<FONT color="green">167</FONT>     * &lt;p&gt;<a name="line.167"></a>
<FONT color="green">168</FONT>     * &lt;strong&gt;Workaround&lt;/strong&gt;: A workaround to this issue with all version of<a name="line.168"></a>
<FONT color="green">169</FONT>     * Java is to simply save a GIF as a PNG; no change to your code needs to be<a name="line.169"></a>
<FONT color="green">170</FONT>     * made except when the image is saved out, e.g. using {@link ImageIO}.<a name="line.170"></a>
<FONT color="green">171</FONT>     * &lt;p&gt;<a name="line.171"></a>
<FONT color="green">172</FONT>     * When a file type of "PNG" is used, both the transparency and high color<a name="line.172"></a>
<FONT color="green">173</FONT>     * quality will be maintained as the PNG code path in Java2D is superior to the<a name="line.173"></a>
<FONT color="green">174</FONT>     * GIF implementation.<a name="line.174"></a>
<FONT color="green">175</FONT>     * &lt;p&gt;<a name="line.175"></a>
<FONT color="green">176</FONT>     * If the issue with optional {@link BufferedImageOp}s destroying GIF image<a name="line.176"></a>
<FONT color="green">177</FONT>     * content is ever fixed in the platform, saving out resulting images as GIFs<a name="line.177"></a>
<FONT color="green">178</FONT>     * should suddenly start working.<a name="line.178"></a>
<FONT color="green">179</FONT>     * &lt;p&gt;<a name="line.179"></a>
<FONT color="green">180</FONT>     * More can be read about the issue &lt;a<a name="line.180"></a>
<FONT color="green">181</FONT>     * href="http://gman.eichberger.de/2007/07/transparent-gifs-in-java.html"<a name="line.181"></a>
<FONT color="green">182</FONT>     * &gt;here&lt;/a&gt; and &lt;a<a name="line.182"></a>
<FONT color="green">183</FONT>     * href="http://ubuntuforums.org/archive/index.php/t-1060128.html"&gt;here&lt;/a&gt;.<a name="line.183"></a>
<FONT color="green">184</FONT>     * &lt;h3&gt;Logging&lt;/h3&gt;<a name="line.184"></a>
<FONT color="green">185</FONT>     * This class implements all its debug logging via the<a name="line.185"></a>
<FONT color="green">186</FONT>     * {@link #log(int, String, Object...)} method. At this time logging is done<a name="line.186"></a>
<FONT color="green">187</FONT>     * directly to &lt;code&gt;System.out&lt;/code&gt; via the &lt;code&gt;printf&lt;/code&gt; method. This<a name="line.187"></a>
<FONT color="green">188</FONT>     * allows the logging to be light weight and easy to capture while adding no<a name="line.188"></a>
<FONT color="green">189</FONT>     * dependencies to the library.<a name="line.189"></a>
<FONT color="green">190</FONT>     * &lt;p/&gt;<a name="line.190"></a>
<FONT color="green">191</FONT>     * Implementation of logging in this class is as efficient as possible; avoiding<a name="line.191"></a>
<FONT color="green">192</FONT>     * any calls to the logger method or passing of arguments if logging is not<a name="line.192"></a>
<FONT color="green">193</FONT>     * enabled to avoid the (hidden) cost of constructing the Object[] argument for<a name="line.193"></a>
<FONT color="green">194</FONT>     * the varargs-based method call.<a name="line.194"></a>
<FONT color="green">195</FONT>     * <a name="line.195"></a>
<FONT color="green">196</FONT>     * @author Riyad Kalla (software@thebuzzmedia.com)<a name="line.196"></a>
<FONT color="green">197</FONT>     * @since 1.1<a name="line.197"></a>
<FONT color="green">198</FONT>     */<a name="line.198"></a>
<FONT color="green">199</FONT>    public class Scalr {<a name="line.199"></a>
<FONT color="green">200</FONT>            /**<a name="line.200"></a>
<FONT color="green">201</FONT>             * System property name used to define the debug boolean flag.<a name="line.201"></a>
<FONT color="green">202</FONT>             * &lt;p/&gt;<a name="line.202"></a>
<FONT color="green">203</FONT>             * Value is "&lt;code&gt;imgscalr.debug&lt;/code&gt;".<a name="line.203"></a>
<FONT color="green">204</FONT>             */<a name="line.204"></a>
<FONT color="green">205</FONT>            public static final String DEBUG_PROPERTY_NAME = "imgscalr.debug";<a name="line.205"></a>
<FONT color="green">206</FONT>    <a name="line.206"></a>
<FONT color="green">207</FONT>            /**<a name="line.207"></a>
<FONT color="green">208</FONT>             * System property name used to define a custom log prefix.<a name="line.208"></a>
<FONT color="green">209</FONT>             * &lt;p/&gt;<a name="line.209"></a>
<FONT color="green">210</FONT>             * Value is "&lt;code&gt;imgscalr.logPrefix&lt;/code&gt;".<a name="line.210"></a>
<FONT color="green">211</FONT>             */<a name="line.211"></a>
<FONT color="green">212</FONT>            public static final String LOG_PREFIX_PROPERTY_NAME = "imgscalr.logPrefix";<a name="line.212"></a>
<FONT color="green">213</FONT>    <a name="line.213"></a>
<FONT color="green">214</FONT>            /**<a name="line.214"></a>
<FONT color="green">215</FONT>             * Flag used to indicate if debugging output has been enabled by setting the<a name="line.215"></a>
<FONT color="green">216</FONT>             * "&lt;code&gt;imgscalr.debug&lt;/code&gt;" system property to &lt;code&gt;true&lt;/code&gt;. This<a name="line.216"></a>
<FONT color="green">217</FONT>             * value will be &lt;code&gt;false&lt;/code&gt; if the "&lt;code&gt;imgscalr.debug&lt;/code&gt;"<a name="line.217"></a>
<FONT color="green">218</FONT>             * system property is undefined or set to &lt;code&gt;false&lt;/code&gt;.<a name="line.218"></a>
<FONT color="green">219</FONT>             * &lt;p/&gt;<a name="line.219"></a>
<FONT color="green">220</FONT>             * This property can be set on startup with:&lt;br/&gt;<a name="line.220"></a>
<FONT color="green">221</FONT>             * &lt;code&gt;<a name="line.221"></a>
<FONT color="green">222</FONT>             * -Dimgscalr.debug=true<a name="line.222"></a>
<FONT color="green">223</FONT>             * &lt;/code&gt; or by calling {@link System#setProperty(String, String)} to set a<a name="line.223"></a>
<FONT color="green">224</FONT>             * new property value for {@link #DEBUG_PROPERTY_NAME} before this class is<a name="line.224"></a>
<FONT color="green">225</FONT>             * loaded.<a name="line.225"></a>
<FONT color="green">226</FONT>             * &lt;p/&gt;<a name="line.226"></a>
<FONT color="green">227</FONT>             * Default value is &lt;code&gt;false&lt;/code&gt;.<a name="line.227"></a>
<FONT color="green">228</FONT>             */<a name="line.228"></a>
<FONT color="green">229</FONT>            public static final boolean DEBUG = Boolean.getBoolean(DEBUG_PROPERTY_NAME);<a name="line.229"></a>
<FONT color="green">230</FONT>    <a name="line.230"></a>
<FONT color="green">231</FONT>            /**<a name="line.231"></a>
<FONT color="green">232</FONT>             * Prefix to every log message this library logs. Using a well-defined<a name="line.232"></a>
<FONT color="green">233</FONT>             * prefix helps make it easier both visually and programmatically to scan<a name="line.233"></a>
<FONT color="green">234</FONT>             * log files for messages produced by this library.<a name="line.234"></a>
<FONT color="green">235</FONT>             * &lt;p/&gt;<a name="line.235"></a>
<FONT color="green">236</FONT>             * This property can be set on startup with:&lt;br/&gt;<a name="line.236"></a>
<FONT color="green">237</FONT>             * &lt;code&gt;<a name="line.237"></a>
<FONT color="green">238</FONT>             * -Dimgscalr.logPrefix=&amp;lt;YOUR PREFIX HERE&amp;gt;<a name="line.238"></a>
<FONT color="green">239</FONT>             * &lt;/code&gt; or by calling {@link System#setProperty(String, String)} to set a<a name="line.239"></a>
<FONT color="green">240</FONT>             * new property value for {@link #LOG_PREFIX_PROPERTY_NAME} before this<a name="line.240"></a>
<FONT color="green">241</FONT>             * class is loaded.<a name="line.241"></a>
<FONT color="green">242</FONT>             * &lt;p/&gt;<a name="line.242"></a>
<FONT color="green">243</FONT>             * Default value is "&lt;code&gt;[imgscalr] &lt;/code&gt;" (including the space).<a name="line.243"></a>
<FONT color="green">244</FONT>             */<a name="line.244"></a>
<FONT color="green">245</FONT>            public static final String LOG_PREFIX = System.getProperty(<a name="line.245"></a>
<FONT color="green">246</FONT>                            LOG_PREFIX_PROPERTY_NAME, "[imgscalr] ");<a name="line.246"></a>
<FONT color="green">247</FONT>    <a name="line.247"></a>
<FONT color="green">248</FONT>            /**<a name="line.248"></a>
<FONT color="green">249</FONT>             * A {@link ConvolveOp} using a very light "blur" kernel that acts like an<a name="line.249"></a>
<FONT color="green">250</FONT>             * anti-aliasing filter (softens the image a bit) when applied to an image.<a name="line.250"></a>
<FONT color="green">251</FONT>             * &lt;p/&gt;<a name="line.251"></a>
<FONT color="green">252</FONT>             * A common request by users of the library was that they wished to "soften"<a name="line.252"></a>
<FONT color="green">253</FONT>             * resulting images when scaling them down drastically. After quite a bit of<a name="line.253"></a>
<FONT color="green">254</FONT>             * A/B testing, the kernel used by this Op was selected as the closest match<a name="line.254"></a>
<FONT color="green">255</FONT>             * for the target which was the softer results from the deprecated<a name="line.255"></a>
<FONT color="green">256</FONT>             * {@link AreaAveragingScaleFilter} (which is used internally by the<a name="line.256"></a>
<FONT color="green">257</FONT>             * deprecated {@link Image#getScaledInstance(int, int, int)} method in the<a name="line.257"></a>
<FONT color="green">258</FONT>             * JDK that imgscalr is meant to replace).<a name="line.258"></a>
<FONT color="green">259</FONT>             * &lt;p/&gt;<a name="line.259"></a>
<FONT color="green">260</FONT>             * This ConvolveOp uses a 3x3 kernel with the values:<a name="line.260"></a>
<FONT color="green">261</FONT>             * &lt;table cellpadding="4" border="1"&gt;<a name="line.261"></a>
<FONT color="green">262</FONT>             * &lt;tr&gt;<a name="line.262"></a>
<FONT color="green">263</FONT>             * &lt;td&gt;.0f&lt;/td&gt;<a name="line.263"></a>
<FONT color="green">264</FONT>             * &lt;td&gt;.08f&lt;/td&gt;<a name="line.264"></a>
<FONT color="green">265</FONT>             * &lt;td&gt;.0f&lt;/td&gt;<a name="line.265"></a>
<FONT color="green">266</FONT>             * &lt;/tr&gt;<a name="line.266"></a>
<FONT color="green">267</FONT>             * &lt;tr&gt;<a name="line.267"></a>
<FONT color="green">268</FONT>             * &lt;td&gt;.08f&lt;/td&gt;<a name="line.268"></a>
<FONT color="green">269</FONT>             * &lt;td&gt;.68f&lt;/td&gt;<a name="line.269"></a>
<FONT color="green">270</FONT>             * &lt;td&gt;.08f&lt;/td&gt;<a name="line.270"></a>
<FONT color="green">271</FONT>             * &lt;/tr&gt;<a name="line.271"></a>
<FONT color="green">272</FONT>             * &lt;tr&gt;<a name="line.272"></a>
<FONT color="green">273</FONT>             * &lt;td&gt;.0f&lt;/td&gt;<a name="line.273"></a>
<FONT color="green">274</FONT>             * &lt;td&gt;.08f&lt;/td&gt;<a name="line.274"></a>
<FONT color="green">275</FONT>             * &lt;td&gt;.0f&lt;/td&gt;<a name="line.275"></a>
<FONT color="green">276</FONT>             * &lt;/tr&gt;<a name="line.276"></a>
<FONT color="green">277</FONT>             * &lt;/table&gt;<a name="line.277"></a>
<FONT color="green">278</FONT>             * &lt;p/&gt;<a name="line.278"></a>
<FONT color="green">279</FONT>             * For those that have worked with ConvolveOps before, this Op uses the<a name="line.279"></a>
<FONT color="green">280</FONT>             * {@link ConvolveOp#EDGE_NO_OP} instruction to not process the pixels along<a name="line.280"></a>
<FONT color="green">281</FONT>             * the very edge of the image (otherwise EDGE_ZERO_FILL would create a<a name="line.281"></a>
<FONT color="green">282</FONT>             * black-border around the image). If you have not worked with a ConvolveOp<a name="line.282"></a>
<FONT color="green">283</FONT>             * before, it just means this default OP will "do the right thing" and not<a name="line.283"></a>
<FONT color="green">284</FONT>             * give you garbage results.<a name="line.284"></a>
<FONT color="green">285</FONT>             * &lt;p/&gt;<a name="line.285"></a>
<FONT color="green">286</FONT>             * This ConvolveOp uses no {@link RenderingHints} values as internally the<a name="line.286"></a>
<FONT color="green">287</FONT>             * {@link ConvolveOp} class only uses hints when doing a color conversion<a name="line.287"></a>
<FONT color="green">288</FONT>             * between the source and destination {@link BufferedImage} targets.<a name="line.288"></a>
<FONT color="green">289</FONT>             * imgscalr allows the {@link ConvolveOp} to create its own destination<a name="line.289"></a>
<FONT color="green">290</FONT>             * image every time, so no color conversion is ever needed and thus no<a name="line.290"></a>
<FONT color="green">291</FONT>             * hints.<a name="line.291"></a>
<FONT color="green">292</FONT>             * &lt;h3&gt;Performance&lt;/h3&gt;<a name="line.292"></a>
<FONT color="green">293</FONT>             * Use of this (and other) {@link ConvolveOp}s are hardware accelerated when<a name="line.293"></a>
<FONT color="green">294</FONT>             * possible. For more information on if your image op is hardware<a name="line.294"></a>
<FONT color="green">295</FONT>             * accelerated or not, check the source code of the underlying JDK class<a name="line.295"></a>
<FONT color="green">296</FONT>             * that actually executes the Op code, &lt;a href=<a name="line.296"></a>
<FONT color="green">297</FONT>             * "http://www.docjar.com/html/api/sun/awt/image/ImagingLib.java.html"<a name="line.297"></a>
<FONT color="green">298</FONT>             * &gt;sun.awt.image.ImagingLib&lt;/a&gt;.<a name="line.298"></a>
<FONT color="green">299</FONT>             * &lt;h3&gt;Known Issues&lt;/h3&gt;<a name="line.299"></a>
<FONT color="green">300</FONT>             * In all versions of Java (tested up to Java 7 preview Build 131), running<a name="line.300"></a>
<FONT color="green">301</FONT>             * this op against a GIF with transparency and attempting to save the<a name="line.301"></a>
<FONT color="green">302</FONT>             * resulting image as a GIF results in a corrupted/empty file. The file must<a name="line.302"></a>
<FONT color="green">303</FONT>             * be saved out as a PNG to maintain the transparency.<a name="line.303"></a>
<FONT color="green">304</FONT>             * <a name="line.304"></a>
<FONT color="green">305</FONT>             * @since 3.0<a name="line.305"></a>
<FONT color="green">306</FONT>             */<a name="line.306"></a>
<FONT color="green">307</FONT>            public static final ConvolveOp OP_ANTIALIAS = new ConvolveOp(<a name="line.307"></a>
<FONT color="green">308</FONT>                            new Kernel(3, 3, new float[] { .0f, .08f, .0f, .08f, .68f, .08f,<a name="line.308"></a>
<FONT color="green">309</FONT>                                            .0f, .08f, .0f }), ConvolveOp.EDGE_NO_OP, null);<a name="line.309"></a>
<FONT color="green">310</FONT>    <a name="line.310"></a>
<FONT color="green">311</FONT>            /**<a name="line.311"></a>
<FONT color="green">312</FONT>             * A {@link RescaleOp} used to make any input image 10% darker.<a name="line.312"></a>
<FONT color="green">313</FONT>             * &lt;p/&gt;<a name="line.313"></a>
<FONT color="green">314</FONT>             * This operation can be applied multiple times in a row if greater than 10%<a name="line.314"></a>
<FONT color="green">315</FONT>             * changes in brightness are desired.<a name="line.315"></a>
<FONT color="green">316</FONT>             * <a name="line.316"></a>
<FONT color="green">317</FONT>             * @since 4.0<a name="line.317"></a>
<FONT color="green">318</FONT>             */<a name="line.318"></a>
<FONT color="green">319</FONT>            public static final RescaleOp OP_DARKER = new RescaleOp(0.9f, 0, null);<a name="line.319"></a>
<FONT color="green">320</FONT>    <a name="line.320"></a>
<FONT color="green">321</FONT>            /**<a name="line.321"></a>
<FONT color="green">322</FONT>             * A {@link RescaleOp} used to make any input image 10% brighter.<a name="line.322"></a>
<FONT color="green">323</FONT>             * &lt;p/&gt;<a name="line.323"></a>
<FONT color="green">324</FONT>             * This operation can be applied multiple times in a row if greater than 10%<a name="line.324"></a>
<FONT color="green">325</FONT>             * changes in brightness are desired.<a name="line.325"></a>
<FONT color="green">326</FONT>             * <a name="line.326"></a>
<FONT color="green">327</FONT>             * @since 4.0<a name="line.327"></a>
<FONT color="green">328</FONT>             */<a name="line.328"></a>
<FONT color="green">329</FONT>            public static final RescaleOp OP_BRIGHTER = new RescaleOp(1.1f, 0, null);<a name="line.329"></a>
<FONT color="green">330</FONT>    <a name="line.330"></a>
<FONT color="green">331</FONT>            /**<a name="line.331"></a>
<FONT color="green">332</FONT>             * A {@link ColorConvertOp} used to convert any image to a grayscale color<a name="line.332"></a>
<FONT color="green">333</FONT>             * palette.<a name="line.333"></a>
<FONT color="green">334</FONT>             * &lt;p/&gt;<a name="line.334"></a>
<FONT color="green">335</FONT>             * Applying this op multiple times to the same image has no compounding<a name="line.335"></a>
<FONT color="green">336</FONT>             * effects.<a name="line.336"></a>
<FONT color="green">337</FONT>             * <a name="line.337"></a>
<FONT color="green">338</FONT>             * @since 4.0<a name="line.338"></a>
<FONT color="green">339</FONT>             */<a name="line.339"></a>
<FONT color="green">340</FONT>            public static final ColorConvertOp OP_GRAYSCALE = new ColorConvertOp(<a name="line.340"></a>
<FONT color="green">341</FONT>                            ColorSpace.getInstance(ColorSpace.CS_GRAY), null);<a name="line.341"></a>
<FONT color="green">342</FONT>    <a name="line.342"></a>
<FONT color="green">343</FONT>            /**<a name="line.343"></a>
<FONT color="green">344</FONT>             * Static initializer used to prepare some of the variables used by this<a name="line.344"></a>
<FONT color="green">345</FONT>             * class.<a name="line.345"></a>
<FONT color="green">346</FONT>             */<a name="line.346"></a>
<FONT color="green">347</FONT>            static {<a name="line.347"></a>
<FONT color="green">348</FONT>                    log(0, null, "Debug output ENABLED");<a name="line.348"></a>
<FONT color="green">349</FONT>            }<a name="line.349"></a>
<FONT color="green">350</FONT>    <a name="line.350"></a>
<FONT color="green">351</FONT>            /**<a name="line.351"></a>
<FONT color="green">352</FONT>             * Used to define the different scaling hints that the algorithm can use.<a name="line.352"></a>
<FONT color="green">353</FONT>             * <a name="line.353"></a>
<FONT color="green">354</FONT>             * @author Riyad Kalla (software@thebuzzmedia.com)<a name="line.354"></a>
<FONT color="green">355</FONT>             * @since 1.1<a name="line.355"></a>
<FONT color="green">356</FONT>             */<a name="line.356"></a>
<FONT color="green">357</FONT>            public static enum Method {<a name="line.357"></a>
<FONT color="green">358</FONT>                    /**<a name="line.358"></a>
<FONT color="green">359</FONT>                     * Used to indicate that the scaling implementation should decide which<a name="line.359"></a>
<FONT color="green">360</FONT>                     * method to use in order to get the best looking scaled image in the<a name="line.360"></a>
<FONT color="green">361</FONT>                     * least amount of time.<a name="line.361"></a>
<FONT color="green">362</FONT>                     * &lt;p/&gt;<a name="line.362"></a>
<FONT color="green">363</FONT>                     * The scaling algorithm will use the<a name="line.363"></a>
<FONT color="green">364</FONT>                     * {@link Scalr#THRESHOLD_QUALITY_BALANCED} or<a name="line.364"></a>
<FONT color="green">365</FONT>                     * {@link Scalr#THRESHOLD_BALANCED_SPEED} thresholds as cut-offs to<a name="line.365"></a>
<FONT color="green">366</FONT>                     * decide between selecting the &lt;code&gt;QUALITY&lt;/code&gt;,<a name="line.366"></a>
<FONT color="green">367</FONT>                     * &lt;code&gt;BALANCED&lt;/code&gt; or &lt;code&gt;SPEED&lt;/code&gt; scaling algorithms.<a name="line.367"></a>
<FONT color="green">368</FONT>                     * &lt;p/&gt;<a name="line.368"></a>
<FONT color="green">369</FONT>                     * By default the thresholds chosen will give nearly the best looking<a name="line.369"></a>
<FONT color="green">370</FONT>                     * result in the fastest amount of time. We intend this method to work<a name="line.370"></a>
<FONT color="green">371</FONT>                     * for 80% of people looking to scale an image quickly and get a good<a name="line.371"></a>
<FONT color="green">372</FONT>                     * looking result.<a name="line.372"></a>
<FONT color="green">373</FONT>                     */<a name="line.373"></a>
<FONT color="green">374</FONT>                    AUTOMATIC,<a name="line.374"></a>
<FONT color="green">375</FONT>                    /**<a name="line.375"></a>
<FONT color="green">376</FONT>                     * Used to indicate that the scaling implementation should scale as fast<a name="line.376"></a>
<FONT color="green">377</FONT>                     * as possible and return a result. For smaller images (800px in size)<a name="line.377"></a>
<FONT color="green">378</FONT>                     * this can result in noticeable aliasing but it can be a few magnitudes<a name="line.378"></a>
<FONT color="green">379</FONT>                     * times faster than using the QUALITY method.<a name="line.379"></a>
<FONT color="green">380</FONT>                     */<a name="line.380"></a>
<FONT color="green">381</FONT>                    SPEED,<a name="line.381"></a>
<FONT color="green">382</FONT>                    /**<a name="line.382"></a>
<FONT color="green">383</FONT>                     * Used to indicate that the scaling implementation should use a scaling<a name="line.383"></a>
<FONT color="green">384</FONT>                     * operation balanced between SPEED and QUALITY. Sometimes SPEED looks<a name="line.384"></a>
<FONT color="green">385</FONT>                     * too low quality to be useful (e.g. text can become unreadable when<a name="line.385"></a>
<FONT color="green">386</FONT>                     * scaled using SPEED) but using QUALITY mode will increase the<a name="line.386"></a>
<FONT color="green">387</FONT>                     * processing time too much. This mode provides a "better than SPEED"<a name="line.387"></a>
<FONT color="green">388</FONT>                     * quality in a "less than QUALITY" amount of time.<a name="line.388"></a>
<FONT color="green">389</FONT>                     */<a name="line.389"></a>
<FONT color="green">390</FONT>                    BALANCED,<a name="line.390"></a>
<FONT color="green">391</FONT>                    /**<a name="line.391"></a>
<FONT color="green">392</FONT>                     * Used to indicate that the scaling implementation should do everything<a name="line.392"></a>
<FONT color="green">393</FONT>                     * it can to create as nice of a result as possible. This approach is<a name="line.393"></a>
<FONT color="green">394</FONT>                     * most important for smaller pictures (800px or smaller) and less<a name="line.394"></a>
<FONT color="green">395</FONT>                     * important for larger pictures as the difference between this method<a name="line.395"></a>
<FONT color="green">396</FONT>                     * and the SPEED method become less and less noticeable as the<a name="line.396"></a>
<FONT color="green">397</FONT>                     * source-image size increases. Using the AUTOMATIC method will<a name="line.397"></a>
<FONT color="green">398</FONT>                     * automatically prefer the QUALITY method when scaling an image down<a name="line.398"></a>
<FONT color="green">399</FONT>                     * below 800px in size.<a name="line.399"></a>
<FONT color="green">400</FONT>                     */<a name="line.400"></a>
<FONT color="green">401</FONT>                    QUALITY;<a name="line.401"></a>
<FONT color="green">402</FONT>            }<a name="line.402"></a>
<FONT color="green">403</FONT>    <a name="line.403"></a>
<FONT color="green">404</FONT>            /**<a name="line.404"></a>
<FONT color="green">405</FONT>             * Used to define the different modes of resizing that the algorithm can<a name="line.405"></a>
<FONT color="green">406</FONT>             * use.<a name="line.406"></a>
<FONT color="green">407</FONT>             * <a name="line.407"></a>
<FONT color="green">408</FONT>             * @author Riyad Kalla (software@thebuzzmedia.com)<a name="line.408"></a>
<FONT color="green">409</FONT>             * @since 3.1<a name="line.409"></a>
<FONT color="green">410</FONT>             */<a name="line.410"></a>
<FONT color="green">411</FONT>            public static enum Mode {<a name="line.411"></a>
<FONT color="green">412</FONT>                    /**<a name="line.412"></a>
<FONT color="green">413</FONT>                     * Used to indicate that the scaling implementation should calculate<a name="line.413"></a>
<FONT color="green">414</FONT>                     * dimensions for the resultant image by looking at the image's<a name="line.414"></a>
<FONT color="green">415</FONT>                     * orientation and generating proportional dimensions that best fit into<a name="line.415"></a>
<FONT color="green">416</FONT>                     * the target width and height given<a name="line.416"></a>
<FONT color="green">417</FONT>                     * <a name="line.417"></a>
<FONT color="green">418</FONT>                     * See "Image Proportions" in the {@link Scalr} class description for<a name="line.418"></a>
<FONT color="green">419</FONT>                     * more detail.<a name="line.419"></a>
<FONT color="green">420</FONT>                     */<a name="line.420"></a>
<FONT color="green">421</FONT>                    AUTOMATIC,<a name="line.421"></a>
<FONT color="green">422</FONT>                    /**<a name="line.422"></a>
<FONT color="green">423</FONT>                     * Used to fit the image to the exact dimensions given regardless of the<a name="line.423"></a>
<FONT color="green">424</FONT>                     * image's proportions. If the dimensions are not proportionally<a name="line.424"></a>
<FONT color="green">425</FONT>                     * correct, this will introduce vertical or horizontal stretching to the<a name="line.425"></a>
<FONT color="green">426</FONT>                     * image.<a name="line.426"></a>
<FONT color="green">427</FONT>                     * &lt;p/&gt;<a name="line.427"></a>
<FONT color="green">428</FONT>                     * It is recommended that you use one of the other &lt;code&gt;FIT_TO&lt;/code&gt;<a name="line.428"></a>
<FONT color="green">429</FONT>                     * modes or {@link Mode#AUTOMATIC} if you want the image to look<a name="line.429"></a>
<FONT color="green">430</FONT>                     * correct, but if dimension-fitting is the #1 priority regardless of<a name="line.430"></a>
<FONT color="green">431</FONT>                     * how it makes the image look, that is what this mode is for.<a name="line.431"></a>
<FONT color="green">432</FONT>                     */<a name="line.432"></a>
<FONT color="green">433</FONT>                    FIT_EXACT,<a name="line.433"></a>
<FONT color="green">434</FONT>                    /**<a name="line.434"></a>
<FONT color="green">435</FONT>                     * Used to indicate that the scaling implementation should calculate<a name="line.435"></a>
<FONT color="green">436</FONT>                     * dimensions for the resultant image that best-fit within the given<a name="line.436"></a>
<FONT color="green">437</FONT>                     * width, regardless of the orientation of the image.<a name="line.437"></a>
<FONT color="green">438</FONT>                     */<a name="line.438"></a>
<FONT color="green">439</FONT>                    FIT_TO_WIDTH,<a name="line.439"></a>
<FONT color="green">440</FONT>                    /**<a name="line.440"></a>
<FONT color="green">441</FONT>                     * Used to indicate that the scaling implementation should calculate<a name="line.441"></a>
<FONT color="green">442</FONT>                     * dimensions for the resultant image that best-fit within the given<a name="line.442"></a>
<FONT color="green">443</FONT>                     * height, regardless of the orientation of the image.<a name="line.443"></a>
<FONT color="green">444</FONT>                     */<a name="line.444"></a>
<FONT color="green">445</FONT>                    FIT_TO_HEIGHT;<a name="line.445"></a>
<FONT color="green">446</FONT>            }<a name="line.446"></a>
<FONT color="green">447</FONT>    <a name="line.447"></a>
<FONT color="green">448</FONT>            /**<a name="line.448"></a>
<FONT color="green">449</FONT>             * Used to define the different types of rotations that can be applied to an<a name="line.449"></a>
<FONT color="green">450</FONT>             * image during a resize operation.<a name="line.450"></a>
<FONT color="green">451</FONT>             * <a name="line.451"></a>
<FONT color="green">452</FONT>             * @author Riyad Kalla (software@thebuzzmedia.com)<a name="line.452"></a>
<FONT color="green">453</FONT>             * @since 3.2<a name="line.453"></a>
<FONT color="green">454</FONT>             */<a name="line.454"></a>
<FONT color="green">455</FONT>            public static enum Rotation {<a name="line.455"></a>
<FONT color="green">456</FONT>                    /**<a name="line.456"></a>
<FONT color="green">457</FONT>                     * 90-degree, clockwise rotation (to the right). This is equivalent to a<a name="line.457"></a>
<FONT color="green">458</FONT>                     * quarter-turn of the image to the right; moving the picture on to its<a name="line.458"></a>
<FONT color="green">459</FONT>                     * right side.<a name="line.459"></a>
<FONT color="green">460</FONT>                     */<a name="line.460"></a>
<FONT color="green">461</FONT>                    CW_90,<a name="line.461"></a>
<FONT color="green">462</FONT>                    /**<a name="line.462"></a>
<FONT color="green">463</FONT>                     * 180-degree, clockwise rotation (to the right). This is equivalent to<a name="line.463"></a>
<FONT color="green">464</FONT>                     * 1 half-turn of the image to the right; rotating the picture around<a name="line.464"></a>
<FONT color="green">465</FONT>                     * until it is upside down from the original position.<a name="line.465"></a>
<FONT color="green">466</FONT>                     */<a name="line.466"></a>
<FONT color="green">467</FONT>                    CW_180,<a name="line.467"></a>
<FONT color="green">468</FONT>                    /**<a name="line.468"></a>
<FONT color="green">469</FONT>                     * 270-degree, clockwise rotation (to the right). This is equivalent to<a name="line.469"></a>
<FONT color="green">470</FONT>                     * a quarter-turn of the image to the left; moving the picture on to its<a name="line.470"></a>
<FONT color="green">471</FONT>                     * left side.<a name="line.471"></a>
<FONT color="green">472</FONT>                     */<a name="line.472"></a>
<FONT color="green">473</FONT>                    CW_270,<a name="line.473"></a>
<FONT color="green">474</FONT>                    /**<a name="line.474"></a>
<FONT color="green">475</FONT>                     * Flip the image horizontally by reflecting it around the y axis.<a name="line.475"></a>
<FONT color="green">476</FONT>                     * &lt;p/&gt;<a name="line.476"></a>
<FONT color="green">477</FONT>                     * This is not a standard rotation around a center point, but instead<a name="line.477"></a>
<FONT color="green">478</FONT>                     * creates the mirrored reflection of the image horizontally.<a name="line.478"></a>
<FONT color="green">479</FONT>                     * &lt;p/&gt;<a name="line.479"></a>
<FONT color="green">480</FONT>                     * More specifically, the vertical orientation of the image stays the<a name="line.480"></a>
<FONT color="green">481</FONT>                     * same (the top stays on top, and the bottom on bottom), but the right<a name="line.481"></a>
<FONT color="green">482</FONT>                     * and left sides flip. This is different than a standard rotation where<a name="line.482"></a>
<FONT color="green">483</FONT>                     * the top and bottom would also have been flipped.<a name="line.483"></a>
<FONT color="green">484</FONT>                     */<a name="line.484"></a>
<FONT color="green">485</FONT>                    FLIP_HORZ,<a name="line.485"></a>
<FONT color="green">486</FONT>                    /**<a name="line.486"></a>
<FONT color="green">487</FONT>                     * Flip the image vertically by reflecting it around the x axis.<a name="line.487"></a>
<FONT color="green">488</FONT>                     * &lt;p/&gt;<a name="line.488"></a>
<FONT color="green">489</FONT>                     * This is not a standard rotation around a center point, but instead<a name="line.489"></a>
<FONT color="green">490</FONT>                     * creates the mirrored reflection of the image vertically.<a name="line.490"></a>
<FONT color="green">491</FONT>                     * &lt;p/&gt;<a name="line.491"></a>
<FONT color="green">492</FONT>                     * More specifically, the horizontal orientation of the image stays the<a name="line.492"></a>
<FONT color="green">493</FONT>                     * same (the left stays on the left and the right stays on the right),<a name="line.493"></a>
<FONT color="green">494</FONT>                     * but the top and bottom sides flip. This is different than a standard<a name="line.494"></a>
<FONT color="green">495</FONT>                     * rotation where the left and right would also have been flipped.<a name="line.495"></a>
<FONT color="green">496</FONT>                     */<a name="line.496"></a>
<FONT color="green">497</FONT>                    FLIP_VERT;<a name="line.497"></a>
<FONT color="green">498</FONT>            }<a name="line.498"></a>
<FONT color="green">499</FONT>    <a name="line.499"></a>
<FONT color="green">500</FONT>            /**<a name="line.500"></a>
<FONT color="green">501</FONT>             * Threshold (in pixels) at which point the scaling operation using the<a name="line.501"></a>
<FONT color="green">502</FONT>             * {@link Method#AUTOMATIC} method will decide if a {@link Method#BALANCED}<a name="line.502"></a>
<FONT color="green">503</FONT>             * method will be used (if smaller than or equal to threshold) or a<a name="line.503"></a>
<FONT color="green">504</FONT>             * {@link Method#SPEED} method will be used (if larger than threshold).<a name="line.504"></a>
<FONT color="green">505</FONT>             * &lt;p/&gt;<a name="line.505"></a>
<FONT color="green">506</FONT>             * The bigger the image is being scaled to, the less noticeable degradations<a name="line.506"></a>
<FONT color="green">507</FONT>             * in the image becomes and the faster algorithms can be selected.<a name="line.507"></a>
<FONT color="green">508</FONT>             * &lt;p/&gt;<a name="line.508"></a>
<FONT color="green">509</FONT>             * The value of this threshold (1600) was chosen after visual, by-hand, A/B<a name="line.509"></a>
<FONT color="green">510</FONT>             * testing between different types of images scaled with this library; both<a name="line.510"></a>
<FONT color="green">511</FONT>             * photographs and screenshots. It was determined that images below this<a name="line.511"></a>
<FONT color="green">512</FONT>             * size need to use a {@link Method#BALANCED} scale method to look decent in<a name="line.512"></a>
<FONT color="green">513</FONT>             * most all cases while using the faster {@link Method#SPEED} method for<a name="line.513"></a>
<FONT color="green">514</FONT>             * images bigger than this threshold showed no noticeable degradation over a<a name="line.514"></a>
<FONT color="green">515</FONT>             * &lt;code&gt;BALANCED&lt;/code&gt; scale.<a name="line.515"></a>
<FONT color="green">516</FONT>             */<a name="line.516"></a>
<FONT color="green">517</FONT>            public static final int THRESHOLD_BALANCED_SPEED = 1600;<a name="line.517"></a>
<FONT color="green">518</FONT>    <a name="line.518"></a>
<FONT color="green">519</FONT>            /**<a name="line.519"></a>
<FONT color="green">520</FONT>             * Threshold (in pixels) at which point the scaling operation using the<a name="line.520"></a>
<FONT color="green">521</FONT>             * {@link Method#AUTOMATIC} method will decide if a {@link Method#QUALITY}<a name="line.521"></a>
<FONT color="green">522</FONT>             * method will be used (if smaller than or equal to threshold) or a<a name="line.522"></a>
<FONT color="green">523</FONT>             * {@link Method#BALANCED} method will be used (if larger than threshold).<a name="line.523"></a>
<FONT color="green">524</FONT>             * &lt;p/&gt;<a name="line.524"></a>
<FONT color="green">525</FONT>             * The bigger the image is being scaled to, the less noticeable degradations<a name="line.525"></a>
<FONT color="green">526</FONT>             * in the image becomes and the faster algorithms can be selected.<a name="line.526"></a>
<FONT color="green">527</FONT>             * &lt;p/&gt;<a name="line.527"></a>
<FONT color="green">528</FONT>             * The value of this threshold (800) was chosen after visual, by-hand, A/B<a name="line.528"></a>
<FONT color="green">529</FONT>             * testing between different types of images scaled with this library; both<a name="line.529"></a>
<FONT color="green">530</FONT>             * photographs and screenshots. It was determined that images below this<a name="line.530"></a>
<FONT color="green">531</FONT>             * size need to use a {@link Method#QUALITY} scale method to look decent in<a name="line.531"></a>
<FONT color="green">532</FONT>             * most all cases while using the faster {@link Method#BALANCED} method for<a name="line.532"></a>
<FONT color="green">533</FONT>             * images bigger than this threshold showed no noticeable degradation over a<a name="line.533"></a>
<FONT color="green">534</FONT>             * &lt;code&gt;QUALITY&lt;/code&gt; scale.<a name="line.534"></a>
<FONT color="green">535</FONT>             */<a name="line.535"></a>
<FONT color="green">536</FONT>            public static final int THRESHOLD_QUALITY_BALANCED = 800;<a name="line.536"></a>
<FONT color="green">537</FONT>    <a name="line.537"></a>
<FONT color="green">538</FONT>            /**<a name="line.538"></a>
<FONT color="green">539</FONT>             * Used to apply, in the order given, 1 or more {@link BufferedImageOp}s to<a name="line.539"></a>
<FONT color="green">540</FONT>             * a given {@link BufferedImage} and return the result.<a name="line.540"></a>
<FONT color="green">541</FONT>             * &lt;p/&gt;<a name="line.541"></a>
<FONT color="green">542</FONT>             * &lt;strong&gt;Feature&lt;/strong&gt;: This implementation works around &lt;a<a name="line.542"></a>
<FONT color="green">543</FONT>             * href="http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4965606"&gt;a<a name="line.543"></a>
<FONT color="green">544</FONT>             * decade-old JDK bug&lt;/a&gt; that can cause a {@link RasterFormatException}<a name="line.544"></a>
<FONT color="green">545</FONT>             * when applying a perfectly valid {@link BufferedImageOp}s to images.<a name="line.545"></a>
<FONT color="green">546</FONT>             * &lt;p/&gt;<a name="line.546"></a>
<FONT color="green">547</FONT>             * &lt;strong&gt;Feature&lt;/strong&gt;: This implementation also works around<a name="line.547"></a>
<FONT color="green">548</FONT>             * {@link BufferedImageOp}s failing to apply and throwing<a name="line.548"></a>
<FONT color="green">549</FONT>             * {@link ImagingOpException}s when run against a &lt;code&gt;src&lt;/code&gt; image<a name="line.549"></a>
<FONT color="green">550</FONT>             * type that is poorly supported. Unfortunately using {@link ImageIO} and<a name="line.550"></a>
<FONT color="green">551</FONT>             * standard Java methods to load images provides no consistency in getting<a name="line.551"></a>
<FONT color="green">552</FONT>             * images in well-supported formats. This method automatically accounts and<a name="line.552"></a>
<FONT color="green">553</FONT>             * corrects for all those problems (if necessary).<a name="line.553"></a>
<FONT color="green">554</FONT>             * &lt;p/&gt;<a name="line.554"></a>
<FONT color="green">555</FONT>             * It is recommended you always use this method to apply any<a name="line.555"></a>
<FONT color="green">556</FONT>             * {@link BufferedImageOp}s instead of relying on directly using the<a name="line.556"></a>
<FONT color="green">557</FONT>             * {@link BufferedImageOp#filter(BufferedImage, BufferedImage)} method.<a name="line.557"></a>
<FONT color="green">558</FONT>             * &lt;p/&gt;<a name="line.558"></a>
<FONT color="green">559</FONT>             * &lt;strong&gt;Performance&lt;/strong&gt;: Not all {@link BufferedImageOp}s are<a name="line.559"></a>
<FONT color="green">560</FONT>             * hardware accelerated operations, but many of the most popular (like<a name="line.560"></a>
<FONT color="green">561</FONT>             * {@link ConvolveOp}) are. For more information on if your image op is<a name="line.561"></a>
<FONT color="green">562</FONT>             * hardware accelerated or not, check the source code of the underlying JDK<a name="line.562"></a>
<FONT color="green">563</FONT>             * class that actually executes the Op code, &lt;a href=<a name="line.563"></a>
<FONT color="green">564</FONT>             * "http://www.docjar.com/html/api/sun/awt/image/ImagingLib.java.html"<a name="line.564"></a>
<FONT color="green">565</FONT>             * &gt;sun.awt.image.ImagingLib&lt;/a&gt;.<a name="line.565"></a>
<FONT color="green">566</FONT>             * &lt;p/&gt;<a name="line.566"></a>
<FONT color="green">567</FONT>             * &lt;strong&gt;TIP&lt;/strong&gt;: This operation leaves the original &lt;code&gt;src&lt;/code&gt;<a name="line.567"></a>
<FONT color="green">568</FONT>             * image unmodified. If the caller is done with the &lt;code&gt;src&lt;/code&gt; image<a name="line.568"></a>
<FONT color="green">569</FONT>             * after getting the result of this operation, remember to call<a name="line.569"></a>
<FONT color="green">570</FONT>             * {@link BufferedImage#flush()} on the &lt;code&gt;src&lt;/code&gt; to free up native<a name="line.570"></a>
<FONT color="green">571</FONT>             * resources and make it easier for the GC to collect the unused image.<a name="line.571"></a>
<FONT color="green">572</FONT>             * <a name="line.572"></a>
<FONT color="green">573</FONT>             * @param src<a name="line.573"></a>
<FONT color="green">574</FONT>             *            The image that will have the ops applied to it.<a name="line.574"></a>
<FONT color="green">575</FONT>             * @param ops<a name="line.575"></a>
<FONT color="green">576</FONT>             *            &lt;code&gt;1&lt;/code&gt; or more ops to apply to the image.<a name="line.576"></a>
<FONT color="green">577</FONT>             * <a name="line.577"></a>
<FONT color="green">578</FONT>             * @return a new {@link BufferedImage} that represents the &lt;code&gt;src&lt;/code&gt;<a name="line.578"></a>
<FONT color="green">579</FONT>             *         with all the given operations applied to it.<a name="line.579"></a>
<FONT color="green">580</FONT>             * <a name="line.580"></a>
<FONT color="green">581</FONT>             * @throws IllegalArgumentException<a name="line.581"></a>
<FONT color="green">582</FONT>             *             if &lt;code&gt;src&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt;.<a name="line.582"></a>
<FONT color="green">583</FONT>             * @throws IllegalArgumentException<a name="line.583"></a>
<FONT color="green">584</FONT>             *             if &lt;code&gt;ops&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt; or empty.<a name="line.584"></a>
<FONT color="green">585</FONT>             * @throws ImagingOpException<a name="line.585"></a>
<FONT color="green">586</FONT>             *             if one of the given {@link BufferedImageOp}s fails to apply.<a name="line.586"></a>
<FONT color="green">587</FONT>             *             These exceptions bubble up from the inside of most of the<a name="line.587"></a>
<FONT color="green">588</FONT>             *             {@link BufferedImageOp} implementations and are explicitly<a name="line.588"></a>
<FONT color="green">589</FONT>             *             defined on the imgscalr API to make it easier for callers to<a name="line.589"></a>
<FONT color="green">590</FONT>             *             catch the exception (if they are passing along optional ops<a name="line.590"></a>
<FONT color="green">591</FONT>             *             to be applied). imgscalr takes detailed steps to avoid the<a name="line.591"></a>
<FONT color="green">592</FONT>             *             most common pitfalls that will cause {@link BufferedImageOp}s<a name="line.592"></a>
<FONT color="green">593</FONT>             *             to fail, even when using straight forward JDK-image<a name="line.593"></a>
<FONT color="green">594</FONT>             *             operations.<a name="line.594"></a>
<FONT color="green">595</FONT>             */<a name="line.595"></a>
<FONT color="green">596</FONT>            public static BufferedImage apply(BufferedImage src, BufferedImageOp... ops)<a name="line.596"></a>
<FONT color="green">597</FONT>                            throws IllegalArgumentException, ImagingOpException {<a name="line.597"></a>
<FONT color="green">598</FONT>                    long t = System.currentTimeMillis();<a name="line.598"></a>
<FONT color="green">599</FONT>    <a name="line.599"></a>
<FONT color="green">600</FONT>                    if (src == null)<a name="line.600"></a>
<FONT color="green">601</FONT>                            throw new IllegalArgumentException("src cannot be null");<a name="line.601"></a>
<FONT color="green">602</FONT>                    if (ops == null || ops.length == 0)<a name="line.602"></a>
<FONT color="green">603</FONT>                            throw new IllegalArgumentException("ops cannot be null or empty");<a name="line.603"></a>
<FONT color="green">604</FONT>    <a name="line.604"></a>
<FONT color="green">605</FONT>                    int type = src.getType();<a name="line.605"></a>
<FONT color="green">606</FONT>    <a name="line.606"></a>
<FONT color="green">607</FONT>                    /*<a name="line.607"></a>
<FONT color="green">608</FONT>                     * Ensure the src image is in the best supported image type before we<a name="line.608"></a>
<FONT color="green">609</FONT>                     * continue, otherwise it is possible our calls below to getBounds2D and<a name="line.609"></a>
<FONT color="green">610</FONT>                     * certainly filter(...) may fail if not.<a name="line.610"></a>
<FONT color="green">611</FONT>                     * <a name="line.611"></a>
<FONT color="green">612</FONT>                     * Java2D makes an attempt at applying most BufferedImageOps using<a name="line.612"></a>
<FONT color="green">613</FONT>                     * hardware acceleration via the ImagingLib internal library.<a name="line.613"></a>
<FONT color="green">614</FONT>                     * <a name="line.614"></a>
<FONT color="green">615</FONT>                     * Unfortunately may of the BufferedImageOp are written to simply fail<a name="line.615"></a>
<FONT color="green">616</FONT>                     * with an ImagingOpException if the operation cannot be applied with no<a name="line.616"></a>
<FONT color="green">617</FONT>                     * additional information about what went wrong or attempts at<a name="line.617"></a>
<FONT color="green">618</FONT>                     * re-applying it in different ways.<a name="line.618"></a>
<FONT color="green">619</FONT>                     * <a name="line.619"></a>
<FONT color="green">620</FONT>                     * This is assuming the failing BufferedImageOp even returns a null<a name="line.620"></a>
<FONT color="green">621</FONT>                     * image after failing to apply; some simply return a corrupted/black<a name="line.621"></a>
<FONT color="green">622</FONT>                     * image that result in no exception and it is up to the user to<a name="line.622"></a>
<FONT color="green">623</FONT>                     * discover this.<a name="line.623"></a>
<FONT color="green">624</FONT>                     * <a name="line.624"></a>
<FONT color="green">625</FONT>                     * In internal testing, EVERY failure I've ever seen was the result of<a name="line.625"></a>
<FONT color="green">626</FONT>                     * the source image being in a poorly-supported BufferedImage Type like<a name="line.626"></a>
<FONT color="green">627</FONT>                     * BGR or ABGR (even though it was loaded with ImageIO).<a name="line.627"></a>
<FONT color="green">628</FONT>                     * <a name="line.628"></a>
<FONT color="green">629</FONT>                     * To avoid this nasty/stupid surprise with BufferedImageOps, we always<a name="line.629"></a>
<FONT color="green">630</FONT>                     * ensure that the src image starts in an optimally supported format<a name="line.630"></a>
<FONT color="green">631</FONT>                     * before we try and apply the filter.<a name="line.631"></a>
<FONT color="green">632</FONT>                     */<a name="line.632"></a>
<FONT color="green">633</FONT>                    if (!(type == BufferedImage.TYPE_INT_RGB || type == BufferedImage.TYPE_INT_ARGB))<a name="line.633"></a>
<FONT color="green">634</FONT>                            src = copyToOptimalImage(src);<a name="line.634"></a>
<FONT color="green">635</FONT>    <a name="line.635"></a>
<FONT color="green">636</FONT>                    if (DEBUG)<a name="line.636"></a>
<FONT color="green">637</FONT>                            log(0, "Applying %d BufferedImageOps...", ops.length);<a name="line.637"></a>
<FONT color="green">638</FONT>    <a name="line.638"></a>
<FONT color="green">639</FONT>                    boolean hasReassignedSrc = false;<a name="line.639"></a>
<FONT color="green">640</FONT>    <a name="line.640"></a>
<FONT color="green">641</FONT>                    for (int i = 0; i &lt; ops.length; i++) {<a name="line.641"></a>
<FONT color="green">642</FONT>                            long subT = System.currentTimeMillis();<a name="line.642"></a>
<FONT color="green">643</FONT>                            BufferedImageOp op = ops[i];<a name="line.643"></a>
<FONT color="green">644</FONT>    <a name="line.644"></a>
<FONT color="green">645</FONT>                            // Skip null ops instead of throwing an exception.<a name="line.645"></a>
<FONT color="green">646</FONT>                            if (op == null)<a name="line.646"></a>
<FONT color="green">647</FONT>                                    continue;<a name="line.647"></a>
<FONT color="green">648</FONT>    <a name="line.648"></a>
<FONT color="green">649</FONT>                            if (DEBUG)<a name="line.649"></a>
<FONT color="green">650</FONT>                                    log(1, "Applying BufferedImageOp [class=%s, toString=%s]...",<a name="line.650"></a>
<FONT color="green">651</FONT>                                                    op.getClass(), op.toString());<a name="line.651"></a>
<FONT color="green">652</FONT>    <a name="line.652"></a>
<FONT color="green">653</FONT>                            /*<a name="line.653"></a>
<FONT color="green">654</FONT>                             * Must use op.getBounds instead of src.getWidth and src.getHeight<a name="line.654"></a>
<FONT color="green">655</FONT>                             * because we are trying to create an image big enough to hold the<a name="line.655"></a>
<FONT color="green">656</FONT>                             * result of this operation (which may be to scale the image<a name="line.656"></a>
<FONT color="green">657</FONT>                             * smaller), in that case the bounds reported by this op and the<a name="line.657"></a>
<FONT color="green">658</FONT>                             * bounds reported by the source image will be different.<a name="line.658"></a>
<FONT color="green">659</FONT>                             */<a name="line.659"></a>
<FONT color="green">660</FONT>                            Rectangle2D resultBounds = op.getBounds2D(src);<a name="line.660"></a>
<FONT color="green">661</FONT>    <a name="line.661"></a>
<FONT color="green">662</FONT>                            // Watch out for flaky/misbehaving ops that fail to work right.<a name="line.662"></a>
<FONT color="green">663</FONT>                            if (resultBounds == null)<a name="line.663"></a>
<FONT color="green">664</FONT>                                    throw new ImagingOpException(<a name="line.664"></a>
<FONT color="green">665</FONT>                                                    "BufferedImageOp ["<a name="line.665"></a>
<FONT color="green">666</FONT>                                                                    + op.toString()<a name="line.666"></a>
<FONT color="green">667</FONT>                                                                    + "] getBounds2D(src) returned null bounds for the target image; this should not happen and indicates a problem with application of this type of op.");<a name="line.667"></a>
<FONT color="green">668</FONT>    <a name="line.668"></a>
<FONT color="green">669</FONT>                            /*<a name="line.669"></a>
<FONT color="green">670</FONT>                             * We must manually create the target image; we cannot rely on the<a name="line.670"></a>
<FONT color="green">671</FONT>                             * null-destination filter() method to create a valid destination<a name="line.671"></a>
<FONT color="green">672</FONT>                             * for us thanks to this JDK bug that has been filed for almost a<a name="line.672"></a>
<FONT color="green">673</FONT>                             * decade:<a name="line.673"></a>
<FONT color="green">674</FONT>                             * http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4965606<a name="line.674"></a>
<FONT color="green">675</FONT>                             */<a name="line.675"></a>
<FONT color="green">676</FONT>                            BufferedImage dest = createOptimalImage(src,<a name="line.676"></a>
<FONT color="green">677</FONT>                                            (int) Math.round(resultBounds.getWidth()),<a name="line.677"></a>
<FONT color="green">678</FONT>                                            (int) Math.round(resultBounds.getHeight()));<a name="line.678"></a>
<FONT color="green">679</FONT>    <a name="line.679"></a>
<FONT color="green">680</FONT>                            // Perform the operation, update our result to return.<a name="line.680"></a>
<FONT color="green">681</FONT>                            BufferedImage result = op.filter(src, dest);<a name="line.681"></a>
<FONT color="green">682</FONT>    <a name="line.682"></a>
<FONT color="green">683</FONT>                            /*<a name="line.683"></a>
<FONT color="green">684</FONT>                             * Flush the 'src' image ONLY IF it is one of our interim temporary<a name="line.684"></a>
<FONT color="green">685</FONT>                             * images being used when applying 2 or more operations back to<a name="line.685"></a>
<FONT color="green">686</FONT>                             * back. We never want to flush the original image passed in.<a name="line.686"></a>
<FONT color="green">687</FONT>                             */<a name="line.687"></a>
<FONT color="green">688</FONT>                            if (hasReassignedSrc)<a name="line.688"></a>
<FONT color="green">689</FONT>                                    src.flush();<a name="line.689"></a>
<FONT color="green">690</FONT>    <a name="line.690"></a>
<FONT color="green">691</FONT>                            /*<a name="line.691"></a>
<FONT color="green">692</FONT>                             * Incase there are more operations to perform, update what we<a name="line.692"></a>
<FONT color="green">693</FONT>                             * consider the 'src' reference to our last result so on the next<a name="line.693"></a>
<FONT color="green">694</FONT>                             * iteration the next op is applied to this result and not back<a name="line.694"></a>
<FONT color="green">695</FONT>                             * against the original src passed in.<a name="line.695"></a>
<FONT color="green">696</FONT>                             */<a name="line.696"></a>
<FONT color="green">697</FONT>                            src = result;<a name="line.697"></a>
<FONT color="green">698</FONT>    <a name="line.698"></a>
<FONT color="green">699</FONT>                            /*<a name="line.699"></a>
<FONT color="green">700</FONT>                             * Keep track of when we re-assign 'src' to an interim temporary<a name="line.700"></a>
<FONT color="green">701</FONT>                             * image, so we know when we can explicitly flush it and clean up<a name="line.701"></a>
<FONT color="green">702</FONT>                             * references on future iterations.<a name="line.702"></a>
<FONT color="green">703</FONT>                             */<a name="line.703"></a>
<FONT color="green">704</FONT>                            hasReassignedSrc = true;<a name="line.704"></a>
<FONT color="green">705</FONT>    <a name="line.705"></a>
<FONT color="green">706</FONT>                            if (DEBUG)<a name="line.706"></a>
<FONT color="green">707</FONT>                                    log(1,<a name="line.707"></a>
<FONT color="green">708</FONT>                                                    "Applied BufferedImageOp in %d ms, result [width=%d, height=%d]",<a name="line.708"></a>
<FONT color="green">709</FONT>                                                    System.currentTimeMillis() - subT, result.getWidth(),<a name="line.709"></a>
<FONT color="green">710</FONT>                                                    result.getHeight());<a name="line.710"></a>
<FONT color="green">711</FONT>                    }<a name="line.711"></a>
<FONT color="green">712</FONT>    <a name="line.712"></a>
<FONT color="green">713</FONT>                    if (DEBUG)<a name="line.713"></a>
<FONT color="green">714</FONT>                            log(0, "All %d BufferedImageOps applied in %d ms", ops.length,<a name="line.714"></a>
<FONT color="green">715</FONT>                                            System.currentTimeMillis() - t);<a name="line.715"></a>
<FONT color="green">716</FONT>    <a name="line.716"></a>
<FONT color="green">717</FONT>                    return src;<a name="line.717"></a>
<FONT color="green">718</FONT>            }<a name="line.718"></a>
<FONT color="green">719</FONT>    <a name="line.719"></a>
<FONT color="green">720</FONT>            /**<a name="line.720"></a>
<FONT color="green">721</FONT>             * Used to crop the given &lt;code&gt;src&lt;/code&gt; image from the top-left corner<a name="line.721"></a>
<FONT color="green">722</FONT>             * and applying any optional {@link BufferedImageOp}s to the result before<a name="line.722"></a>
<FONT color="green">723</FONT>             * returning it.<a name="line.723"></a>
<FONT color="green">724</FONT>             * &lt;p/&gt;<a name="line.724"></a>
<FONT color="green">725</FONT>             * &lt;strong&gt;TIP&lt;/strong&gt;: This operation leaves the original &lt;code&gt;src&lt;/code&gt;<a name="line.725"></a>
<FONT color="green">726</FONT>             * image unmodified. If the caller is done with the &lt;code&gt;src&lt;/code&gt; image<a name="line.726"></a>
<FONT color="green">727</FONT>             * after getting the result of this operation, remember to call<a name="line.727"></a>
<FONT color="green">728</FONT>             * {@link BufferedImage#flush()} on the &lt;code&gt;src&lt;/code&gt; to free up native<a name="line.728"></a>
<FONT color="green">729</FONT>             * resources and make it easier for the GC to collect the unused image.<a name="line.729"></a>
<FONT color="green">730</FONT>             * <a name="line.730"></a>
<FONT color="green">731</FONT>             * @param src<a name="line.731"></a>
<FONT color="green">732</FONT>             *            The image to crop.<a name="line.732"></a>
<FONT color="green">733</FONT>             * @param width<a name="line.733"></a>
<FONT color="green">734</FONT>             *            The width of the bounding cropping box.<a name="line.734"></a>
<FONT color="green">735</FONT>             * @param height<a name="line.735"></a>
<FONT color="green">736</FONT>             *            The height of the bounding cropping box.<a name="line.736"></a>
<FONT color="green">737</FONT>             * @param ops<a name="line.737"></a>
<FONT color="green">738</FONT>             *            &lt;code&gt;0&lt;/code&gt; or more ops to apply to the image. If<a name="line.738"></a>
<FONT color="green">739</FONT>             *            &lt;code&gt;null&lt;/code&gt; or empty then &lt;code&gt;src&lt;/code&gt; is return<a name="line.739"></a>
<FONT color="green">740</FONT>             *            unmodified.<a name="line.740"></a>
<FONT color="green">741</FONT>             * <a name="line.741"></a>
<FONT color="green">742</FONT>             * @return a new {@link BufferedImage} representing the cropped region of<a name="line.742"></a>
<FONT color="green">743</FONT>             *         the &lt;code&gt;src&lt;/code&gt; image with any optional operations applied<a name="line.743"></a>
<FONT color="green">744</FONT>             *         to it.<a name="line.744"></a>
<FONT color="green">745</FONT>             * <a name="line.745"></a>
<FONT color="green">746</FONT>             * @throws IllegalArgumentException<a name="line.746"></a>
<FONT color="green">747</FONT>             *             if &lt;code&gt;src&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt;.<a name="line.747"></a>
<FONT color="green">748</FONT>             * @throws IllegalArgumentException<a name="line.748"></a>
<FONT color="green">749</FONT>             *             if any coordinates of the bounding crop box is invalid within<a name="line.749"></a>
<FONT color="green">750</FONT>             *             the bounds of the &lt;code&gt;src&lt;/code&gt; image (e.g. negative or<a name="line.750"></a>
<FONT color="green">751</FONT>             *             too big).<a name="line.751"></a>
<FONT color="green">752</FONT>             * @throws ImagingOpException<a name="line.752"></a>
<FONT color="green">753</FONT>             *             if one of the given {@link BufferedImageOp}s fails to apply.<a name="line.753"></a>
<FONT color="green">754</FONT>             *             These exceptions bubble up from the inside of most of the<a name="line.754"></a>
<FONT color="green">755</FONT>             *             {@link BufferedImageOp} implementations and are explicitly<a name="line.755"></a>
<FONT color="green">756</FONT>             *             defined on the imgscalr API to make it easier for callers to<a name="line.756"></a>
<FONT color="green">757</FONT>             *             catch the exception (if they are passing along optional ops<a name="line.757"></a>
<FONT color="green">758</FONT>             *             to be applied). imgscalr takes detailed steps to avoid the<a name="line.758"></a>
<FONT color="green">759</FONT>             *             most common pitfalls that will cause {@link BufferedImageOp}s<a name="line.759"></a>
<FONT color="green">760</FONT>             *             to fail, even when using straight forward JDK-image<a name="line.760"></a>
<FONT color="green">761</FONT>             *             operations.<a name="line.761"></a>
<FONT color="green">762</FONT>             */<a name="line.762"></a>
<FONT color="green">763</FONT>            public static BufferedImage crop(BufferedImage src, int width, int height,<a name="line.763"></a>
<FONT color="green">764</FONT>                            BufferedImageOp... ops) throws IllegalArgumentException,<a name="line.764"></a>
<FONT color="green">765</FONT>                            ImagingOpException {<a name="line.765"></a>
<FONT color="green">766</FONT>                    return crop(src, 0, 0, width, height, ops);<a name="line.766"></a>
<FONT color="green">767</FONT>            }<a name="line.767"></a>
<FONT color="green">768</FONT>    <a name="line.768"></a>
<FONT color="green">769</FONT>            /**<a name="line.769"></a>
<FONT color="green">770</FONT>             * Used to crop the given &lt;code&gt;src&lt;/code&gt; image and apply any optional<a name="line.770"></a>
<FONT color="green">771</FONT>             * {@link BufferedImageOp}s to it before returning the result.<a name="line.771"></a>
<FONT color="green">772</FONT>             * &lt;p/&gt;<a name="line.772"></a>
<FONT color="green">773</FONT>             * &lt;strong&gt;TIP&lt;/strong&gt;: This operation leaves the original &lt;code&gt;src&lt;/code&gt;<a name="line.773"></a>
<FONT color="green">774</FONT>             * image unmodified. If the caller is done with the &lt;code&gt;src&lt;/code&gt; image<a name="line.774"></a>
<FONT color="green">775</FONT>             * after getting the result of this operation, remember to call<a name="line.775"></a>
<FONT color="green">776</FONT>             * {@link BufferedImage#flush()} on the &lt;code&gt;src&lt;/code&gt; to free up native<a name="line.776"></a>
<FONT color="green">777</FONT>             * resources and make it easier for the GC to collect the unused image.<a name="line.777"></a>
<FONT color="green">778</FONT>             * <a name="line.778"></a>
<FONT color="green">779</FONT>             * @param src<a name="line.779"></a>
<FONT color="green">780</FONT>             *            The image to crop.<a name="line.780"></a>
<FONT color="green">781</FONT>             * @param x<a name="line.781"></a>
<FONT color="green">782</FONT>             *            The x-coordinate of the top-left corner of the bounding box<a name="line.782"></a>
<FONT color="green">783</FONT>             *            used for cropping.<a name="line.783"></a>
<FONT color="green">784</FONT>             * @param y<a name="line.784"></a>
<FONT color="green">785</FONT>             *            The y-coordinate of the top-left corner of the bounding box<a name="line.785"></a>
<FONT color="green">786</FONT>             *            used for cropping.<a name="line.786"></a>
<FONT color="green">787</FONT>             * @param width<a name="line.787"></a>
<FONT color="green">788</FONT>             *            The width of the bounding cropping box.<a name="line.788"></a>
<FONT color="green">789</FONT>             * @param height<a name="line.789"></a>
<FONT color="green">790</FONT>             *            The height of the bounding cropping box.<a name="line.790"></a>
<FONT color="green">791</FONT>             * @param ops<a name="line.791"></a>
<FONT color="green">792</FONT>             *            &lt;code&gt;0&lt;/code&gt; or more ops to apply to the image. If<a name="line.792"></a>
<FONT color="green">793</FONT>             *            &lt;code&gt;null&lt;/code&gt; or empty then &lt;code&gt;src&lt;/code&gt; is return<a name="line.793"></a>
<FONT color="green">794</FONT>             *            unmodified.<a name="line.794"></a>
<FONT color="green">795</FONT>             * <a name="line.795"></a>
<FONT color="green">796</FONT>             * @return a new {@link BufferedImage} representing the cropped region of<a name="line.796"></a>
<FONT color="green">797</FONT>             *         the &lt;code&gt;src&lt;/code&gt; image with any optional operations applied<a name="line.797"></a>
<FONT color="green">798</FONT>             *         to it.<a name="line.798"></a>
<FONT color="green">799</FONT>             * <a name="line.799"></a>
<FONT color="green">800</FONT>             * @throws IllegalArgumentException<a name="line.800"></a>
<FONT color="green">801</FONT>             *             if &lt;code&gt;src&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt;.<a name="line.801"></a>
<FONT color="green">802</FONT>             * @throws IllegalArgumentException<a name="line.802"></a>
<FONT color="green">803</FONT>             *             if any coordinates of the bounding crop box is invalid within<a name="line.803"></a>
<FONT color="green">804</FONT>             *             the bounds of the &lt;code&gt;src&lt;/code&gt; image (e.g. negative or<a name="line.804"></a>
<FONT color="green">805</FONT>             *             too big).<a name="line.805"></a>
<FONT color="green">806</FONT>             * @throws ImagingOpException<a name="line.806"></a>
<FONT color="green">807</FONT>             *             if one of the given {@link BufferedImageOp}s fails to apply.<a name="line.807"></a>
<FONT color="green">808</FONT>             *             These exceptions bubble up from the inside of most of the<a name="line.808"></a>
<FONT color="green">809</FONT>             *             {@link BufferedImageOp} implementations and are explicitly<a name="line.809"></a>
<FONT color="green">810</FONT>             *             defined on the imgscalr API to make it easier for callers to<a name="line.810"></a>
<FONT color="green">811</FONT>             *             catch the exception (if they are passing along optional ops<a name="line.811"></a>
<FONT color="green">812</FONT>             *             to be applied). imgscalr takes detailed steps to avoid the<a name="line.812"></a>
<FONT color="green">813</FONT>             *             most common pitfalls that will cause {@link BufferedImageOp}s<a name="line.813"></a>
<FONT color="green">814</FONT>             *             to fail, even when using straight forward JDK-image<a name="line.814"></a>
<FONT color="green">815</FONT>             *             operations.<a name="line.815"></a>
<FONT color="green">816</FONT>             */<a name="line.816"></a>
<FONT color="green">817</FONT>            public static BufferedImage crop(BufferedImage src, int x, int y,<a name="line.817"></a>
<FONT color="green">818</FONT>                            int width, int height, BufferedImageOp... ops)<a name="line.818"></a>
<FONT color="green">819</FONT>                            throws IllegalArgumentException, ImagingOpException {<a name="line.819"></a>
<FONT color="green">820</FONT>                    long t = System.currentTimeMillis();<a name="line.820"></a>
<FONT color="green">821</FONT>    <a name="line.821"></a>
<FONT color="green">822</FONT>                    if (src == null)<a name="line.822"></a>
<FONT color="green">823</FONT>                            throw new IllegalArgumentException("src cannot be null");<a name="line.823"></a>
<FONT color="green">824</FONT>                    if (x &lt; 0 || y &lt; 0 || width &lt; 0 || height &lt; 0)<a name="line.824"></a>
<FONT color="green">825</FONT>                            throw new IllegalArgumentException("Invalid crop bounds: x [" + x<a name="line.825"></a>
<FONT color="green">826</FONT>                                            + "], y [" + y + "], width [" + width + "] and height ["<a name="line.826"></a>
<FONT color="green">827</FONT>                                            + height + "] must all be &gt;= 0");<a name="line.827"></a>
<FONT color="green">828</FONT>    <a name="line.828"></a>
<FONT color="green">829</FONT>                    int srcWidth = src.getWidth();<a name="line.829"></a>
<FONT color="green">830</FONT>                    int srcHeight = src.getHeight();<a name="line.830"></a>
<FONT color="green">831</FONT>    <a name="line.831"></a>
<FONT color="green">832</FONT>                    if ((x + width) &gt; srcWidth)<a name="line.832"></a>
<FONT color="green">833</FONT>                            throw new IllegalArgumentException(<a name="line.833"></a>
<FONT color="green">834</FONT>                                            "Invalid crop bounds: x + width [" + (x + width)<a name="line.834"></a>
<FONT color="green">835</FONT>                                                            + "] must be &lt;= src.getWidth() [" + srcWidth + "]");<a name="line.835"></a>
<FONT color="green">836</FONT>                    if ((y + height) &gt; srcHeight)<a name="line.836"></a>
<FONT color="green">837</FONT>                            throw new IllegalArgumentException(<a name="line.837"></a>
<FONT color="green">838</FONT>                                            "Invalid crop bounds: y + height [" + (y + height)<a name="line.838"></a>
<FONT color="green">839</FONT>                                                            + "] must be &lt;= src.getHeight() [" + srcHeight<a name="line.839"></a>
<FONT color="green">840</FONT>                                                            + "]");<a name="line.840"></a>
<FONT color="green">841</FONT>    <a name="line.841"></a>
<FONT color="green">842</FONT>                    if (DEBUG)<a name="line.842"></a>
<FONT color="green">843</FONT>                            log(0,<a name="line.843"></a>
<FONT color="green">844</FONT>                                            "Cropping Image [width=%d, height=%d] to [x=%d, y=%d, width=%d, height=%d]...",<a name="line.844"></a>
<FONT color="green">845</FONT>                                            srcWidth, srcHeight, x, y, width, height);<a name="line.845"></a>
<FONT color="green">846</FONT>    <a name="line.846"></a>
<FONT color="green">847</FONT>                    // Create a target image of an optimal type to render into.<a name="line.847"></a>
<FONT color="green">848</FONT>                    BufferedImage result = createOptimalImage(src, width, height);<a name="line.848"></a>
<FONT color="green">849</FONT>                    Graphics g = result.getGraphics();<a name="line.849"></a>
<FONT color="green">850</FONT>    <a name="line.850"></a>
<FONT color="green">851</FONT>                    /*<a name="line.851"></a>
<FONT color="green">852</FONT>                     * Render the region specified by our crop bounds from the src image<a name="line.852"></a>
<FONT color="green">853</FONT>                     * directly into our result image (which is the exact size of the crop<a name="line.853"></a>
<FONT color="green">854</FONT>                     * region).<a name="line.854"></a>
<FONT color="green">855</FONT>                     */<a name="line.855"></a>
<FONT color="green">856</FONT>                    g.drawImage(src, 0, 0, width, height, x, y, (x + width), (y + height),<a name="line.856"></a>
<FONT color="green">857</FONT>                                    null);<a name="line.857"></a>
<FONT color="green">858</FONT>                    g.dispose();<a name="line.858"></a>
<FONT color="green">859</FONT>    <a name="line.859"></a>
<FONT color="green">860</FONT>                    if (DEBUG)<a name="line.860"></a>
<FONT color="green">861</FONT>                            log(0, "Cropped Image in %d ms", System.currentTimeMillis() - t);<a name="line.861"></a>
<FONT color="green">862</FONT>    <a name="line.862"></a>
<FONT color="green">863</FONT>                    // Apply any optional operations (if specified).<a name="line.863"></a>
<FONT color="green">864</FONT>                    if (ops != null &amp;&amp; ops.length &gt; 0)<a name="line.864"></a>
<FONT color="green">865</FONT>                            result = apply(result, ops);<a name="line.865"></a>
<FONT color="green">866</FONT>    <a name="line.866"></a>
<FONT color="green">867</FONT>                    return result;<a name="line.867"></a>
<FONT color="green">868</FONT>            }<a name="line.868"></a>
<FONT color="green">869</FONT>    <a name="line.869"></a>
<FONT color="green">870</FONT>            /**<a name="line.870"></a>
<FONT color="green">871</FONT>             * Used to apply padding around the edges of an image using<a name="line.871"></a>
<FONT color="green">872</FONT>             * {@link Color#BLACK} to fill the extra padded space and then return the<a name="line.872"></a>
<FONT color="green">873</FONT>             * result.<a name="line.873"></a>
<FONT color="green">874</FONT>             * &lt;p/&gt;<a name="line.874"></a>
<FONT color="green">875</FONT>             * The amount of &lt;code&gt;padding&lt;/code&gt; specified is applied to all sides;<a name="line.875"></a>
<FONT color="green">876</FONT>             * more specifically, a &lt;code&gt;padding&lt;/code&gt; of &lt;code&gt;2&lt;/code&gt; would add 2<a name="line.876"></a>
<FONT color="green">877</FONT>             * extra pixels of space (filled by the given &lt;code&gt;color&lt;/code&gt;) on the<a name="line.877"></a>
<FONT color="green">878</FONT>             * top, bottom, left and right sides of the resulting image causing the<a name="line.878"></a>
<FONT color="green">879</FONT>             * result to be 4 pixels wider and 4 pixels taller than the &lt;code&gt;src&lt;/code&gt;<a name="line.879"></a>
<FONT color="green">880</FONT>             * image.<a name="line.880"></a>
<FONT color="green">881</FONT>             * &lt;p/&gt;<a name="line.881"></a>
<FONT color="green">882</FONT>             * &lt;strong&gt;TIP&lt;/strong&gt;: This operation leaves the original &lt;code&gt;src&lt;/code&gt;<a name="line.882"></a>
<FONT color="green">883</FONT>             * image unmodified. If the caller is done with the &lt;code&gt;src&lt;/code&gt; image<a name="line.883"></a>
<FONT color="green">884</FONT>             * after getting the result of this operation, remember to call<a name="line.884"></a>
<FONT color="green">885</FONT>             * {@link BufferedImage#flush()} on the &lt;code&gt;src&lt;/code&gt; to free up native<a name="line.885"></a>
<FONT color="green">886</FONT>             * resources and make it easier for the GC to collect the unused image.<a name="line.886"></a>
<FONT color="green">887</FONT>             * <a name="line.887"></a>
<FONT color="green">888</FONT>             * @param src<a name="line.888"></a>
<FONT color="green">889</FONT>             *            The image the padding will be added to.<a name="line.889"></a>
<FONT color="green">890</FONT>             * @param padding<a name="line.890"></a>
<FONT color="green">891</FONT>             *            The number of pixels of padding to add to each side in the<a name="line.891"></a>
<FONT color="green">892</FONT>             *            resulting image. If this value is &lt;code&gt;0&lt;/code&gt; then<a name="line.892"></a>
<FONT color="green">893</FONT>             *            &lt;code&gt;src&lt;/code&gt; is returned unmodified.<a name="line.893"></a>
<FONT color="green">894</FONT>             * @param ops<a name="line.894"></a>
<FONT color="green">895</FONT>             *            &lt;code&gt;0&lt;/code&gt; or more ops to apply to the image. If<a name="line.895"></a>
<FONT color="green">896</FONT>             *            &lt;code&gt;null&lt;/code&gt; or empty then &lt;code&gt;src&lt;/code&gt; is return<a name="line.896"></a>
<FONT color="green">897</FONT>             *            unmodified.<a name="line.897"></a>
<FONT color="green">898</FONT>             * <a name="line.898"></a>
<FONT color="green">899</FONT>             * @return a new {@link BufferedImage} representing &lt;code&gt;src&lt;/code&gt; with<a name="line.899"></a>
<FONT color="green">900</FONT>             *         the given padding applied to it.<a name="line.900"></a>
<FONT color="green">901</FONT>             * <a name="line.901"></a>
<FONT color="green">902</FONT>             * @throws IllegalArgumentException<a name="line.902"></a>
<FONT color="green">903</FONT>             *             if &lt;code&gt;src&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt;.<a name="line.903"></a>
<FONT color="green">904</FONT>             * @throws IllegalArgumentException<a name="line.904"></a>
<FONT color="green">905</FONT>             *             if &lt;code&gt;padding&lt;/code&gt; is &amp;lt; &lt;code&gt;1&lt;/code&gt;.<a name="line.905"></a>
<FONT color="green">906</FONT>             * @throws ImagingOpException<a name="line.906"></a>
<FONT color="green">907</FONT>             *             if one of the given {@link BufferedImageOp}s fails to apply.<a name="line.907"></a>
<FONT color="green">908</FONT>             *             These exceptions bubble up from the inside of most of the<a name="line.908"></a>
<FONT color="green">909</FONT>             *             {@link BufferedImageOp} implementations and are explicitly<a name="line.909"></a>
<FONT color="green">910</FONT>             *             defined on the imgscalr API to make it easier for callers to<a name="line.910"></a>
<FONT color="green">911</FONT>             *             catch the exception (if they are passing along optional ops<a name="line.911"></a>
<FONT color="green">912</FONT>             *             to be applied). imgscalr takes detailed steps to avoid the<a name="line.912"></a>
<FONT color="green">913</FONT>             *             most common pitfalls that will cause {@link BufferedImageOp}s<a name="line.913"></a>
<FONT color="green">914</FONT>             *             to fail, even when using straight forward JDK-image<a name="line.914"></a>
<FONT color="green">915</FONT>             *             operations.<a name="line.915"></a>
<FONT color="green">916</FONT>             */<a name="line.916"></a>
<FONT color="green">917</FONT>            public static BufferedImage pad(BufferedImage src, int padding,<a name="line.917"></a>
<FONT color="green">918</FONT>                            BufferedImageOp... ops) throws IllegalArgumentException,<a name="line.918"></a>
<FONT color="green">919</FONT>                            ImagingOpException {<a name="line.919"></a>
<FONT color="green">920</FONT>                    return pad(src, padding, Color.BLACK);<a name="line.920"></a>
<FONT color="green">921</FONT>            }<a name="line.921"></a>
<FONT color="green">922</FONT>    <a name="line.922"></a>
<FONT color="green">923</FONT>            /**<a name="line.923"></a>
<FONT color="green">924</FONT>             * Used to apply padding around the edges of an image using the given color<a name="line.924"></a>
<FONT color="green">925</FONT>             * to fill the extra padded space and then return the result. {@link Color}s<a name="line.925"></a>
<FONT color="green">926</FONT>             * using an alpha channel (i.e. transparency) are supported.<a name="line.926"></a>
<FONT color="green">927</FONT>             * &lt;p/&gt;<a name="line.927"></a>
<FONT color="green">928</FONT>             * The amount of &lt;code&gt;padding&lt;/code&gt; specified is applied to all sides;<a name="line.928"></a>
<FONT color="green">929</FONT>             * more specifically, a &lt;code&gt;padding&lt;/code&gt; of &lt;code&gt;2&lt;/code&gt; would add 2<a name="line.929"></a>
<FONT color="green">930</FONT>             * extra pixels of space (filled by the given &lt;code&gt;color&lt;/code&gt;) on the<a name="line.930"></a>
<FONT color="green">931</FONT>             * top, bottom, left and right sides of the resulting image causing the<a name="line.931"></a>
<FONT color="green">932</FONT>             * result to be 4 pixels wider and 4 pixels taller than the &lt;code&gt;src&lt;/code&gt;<a name="line.932"></a>
<FONT color="green">933</FONT>             * image.<a name="line.933"></a>
<FONT color="green">934</FONT>             * &lt;p/&gt;<a name="line.934"></a>
<FONT color="green">935</FONT>             * &lt;strong&gt;TIP&lt;/strong&gt;: This operation leaves the original &lt;code&gt;src&lt;/code&gt;<a name="line.935"></a>
<FONT color="green">936</FONT>             * image unmodified. If the caller is done with the &lt;code&gt;src&lt;/code&gt; image<a name="line.936"></a>
<FONT color="green">937</FONT>             * after getting the result of this operation, remember to call<a name="line.937"></a>
<FONT color="green">938</FONT>             * {@link BufferedImage#flush()} on the &lt;code&gt;src&lt;/code&gt; to free up native<a name="line.938"></a>
<FONT color="green">939</FONT>             * resources and make it easier for the GC to collect the unused image.<a name="line.939"></a>
<FONT color="green">940</FONT>             * <a name="line.940"></a>
<FONT color="green">941</FONT>             * @param src<a name="line.941"></a>
<FONT color="green">942</FONT>             *            The image the padding will be added to.<a name="line.942"></a>
<FONT color="green">943</FONT>             * @param padding<a name="line.943"></a>
<FONT color="green">944</FONT>             *            The number of pixels of padding to add to each side in the<a name="line.944"></a>
<FONT color="green">945</FONT>             *            resulting image. If this value is &lt;code&gt;0&lt;/code&gt; then<a name="line.945"></a>
<FONT color="green">946</FONT>             *            &lt;code&gt;src&lt;/code&gt; is returned unmodified.<a name="line.946"></a>
<FONT color="green">947</FONT>             * @param color<a name="line.947"></a>
<FONT color="green">948</FONT>             *            The color to fill the padded space with. {@link Color}s using<a name="line.948"></a>
<FONT color="green">949</FONT>             *            an alpha channel (i.e. transparency) are supported.<a name="line.949"></a>
<FONT color="green">950</FONT>             * @param ops<a name="line.950"></a>
<FONT color="green">951</FONT>             *            &lt;code&gt;0&lt;/code&gt; or more ops to apply to the image. If<a name="line.951"></a>
<FONT color="green">952</FONT>             *            &lt;code&gt;null&lt;/code&gt; or empty then &lt;code&gt;src&lt;/code&gt; is return<a name="line.952"></a>
<FONT color="green">953</FONT>             *            unmodified.<a name="line.953"></a>
<FONT color="green">954</FONT>             * <a name="line.954"></a>
<FONT color="green">955</FONT>             * @return a new {@link BufferedImage} representing &lt;code&gt;src&lt;/code&gt; with<a name="line.955"></a>
<FONT color="green">956</FONT>             *         the given padding applied to it.<a name="line.956"></a>
<FONT color="green">957</FONT>             * <a name="line.957"></a>
<FONT color="green">958</FONT>             * @throws IllegalArgumentException<a name="line.958"></a>
<FONT color="green">959</FONT>             *             if &lt;code&gt;src&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt;.<a name="line.959"></a>
<FONT color="green">960</FONT>             * @throws IllegalArgumentException<a name="line.960"></a>
<FONT color="green">961</FONT>             *             if &lt;code&gt;padding&lt;/code&gt; is &amp;lt; &lt;code&gt;1&lt;/code&gt;.<a name="line.961"></a>
<FONT color="green">962</FONT>             * @throws IllegalArgumentException<a name="line.962"></a>
<FONT color="green">963</FONT>             *             if &lt;code&gt;color&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt;.<a name="line.963"></a>
<FONT color="green">964</FONT>             * @throws ImagingOpException<a name="line.964"></a>
<FONT color="green">965</FONT>             *             if one of the given {@link BufferedImageOp}s fails to apply.<a name="line.965"></a>
<FONT color="green">966</FONT>             *             These exceptions bubble up from the inside of most of the<a name="line.966"></a>
<FONT color="green">967</FONT>             *             {@link BufferedImageOp} implementations and are explicitly<a name="line.967"></a>
<FONT color="green">968</FONT>             *             defined on the imgscalr API to make it easier for callers to<a name="line.968"></a>
<FONT color="green">969</FONT>             *             catch the exception (if they are passing along optional ops<a name="line.969"></a>
<FONT color="green">970</FONT>             *             to be applied). imgscalr takes detailed steps to avoid the<a name="line.970"></a>
<FONT color="green">971</FONT>             *             most common pitfalls that will cause {@link BufferedImageOp}s<a name="line.971"></a>
<FONT color="green">972</FONT>             *             to fail, even when using straight forward JDK-image<a name="line.972"></a>
<FONT color="green">973</FONT>             *             operations.<a name="line.973"></a>
<FONT color="green">974</FONT>             */<a name="line.974"></a>
<FONT color="green">975</FONT>            public static BufferedImage pad(BufferedImage src, int padding,<a name="line.975"></a>
<FONT color="green">976</FONT>                            Color color, BufferedImageOp... ops)<a name="line.976"></a>
<FONT color="green">977</FONT>                            throws IllegalArgumentException, ImagingOpException {<a name="line.977"></a>
<FONT color="green">978</FONT>                    long t = System.currentTimeMillis();<a name="line.978"></a>
<FONT color="green">979</FONT>    <a name="line.979"></a>
<FONT color="green">980</FONT>                    if (src == null)<a name="line.980"></a>
<FONT color="green">981</FONT>                            throw new IllegalArgumentException("src cannot be null");<a name="line.981"></a>
<FONT color="green">982</FONT>                    if (padding &lt; 1)<a name="line.982"></a>
<FONT color="green">983</FONT>                            throw new IllegalArgumentException("padding [" + padding<a name="line.983"></a>
<FONT color="green">984</FONT>                                            + "] must be &gt; 0");<a name="line.984"></a>
<FONT color="green">985</FONT>                    if (color == null)<a name="line.985"></a>
<FONT color="green">986</FONT>                            throw new IllegalArgumentException("color cannot be null");<a name="line.986"></a>
<FONT color="green">987</FONT>    <a name="line.987"></a>
<FONT color="green">988</FONT>                    int srcWidth = src.getWidth();<a name="line.988"></a>
<FONT color="green">989</FONT>                    int srcHeight = src.getHeight();<a name="line.989"></a>
<FONT color="green">990</FONT>    <a name="line.990"></a>
<FONT color="green">991</FONT>                    /*<a name="line.991"></a>
<FONT color="green">992</FONT>                     * Double the padding to account for all sides of the image. More<a name="line.992"></a>
<FONT color="green">993</FONT>                     * specifically, if padding is "1" we add 2 pixels to width and 2 to<a name="line.993"></a>
<FONT color="green">994</FONT>                     * height, so we have 1 new pixel of padding all the way around our<a name="line.994"></a>
<FONT color="green">995</FONT>                     * image.<a name="line.995"></a>
<FONT color="green">996</FONT>                     */<a name="line.996"></a>
<FONT color="green">997</FONT>                    int sizeDiff = (padding * 2);<a name="line.997"></a>
<FONT color="green">998</FONT>                    int newWidth = srcWidth + sizeDiff;<a name="line.998"></a>
<FONT color="green">999</FONT>                    int newHeight = srcHeight + sizeDiff;<a name="line.999"></a>
<FONT color="green">1000</FONT>    <a name="line.1000"></a>
<FONT color="green">1001</FONT>                    if (DEBUG)<a name="line.1001"></a>
<FONT color="green">1002</FONT>                            log(0,<a name="line.1002"></a>
<FONT color="green">1003</FONT>                                            "Padding Image from [originalWidth=%d, originalHeight=%d, padding=%d] to [newWidth=%d, newHeight=%d]...",<a name="line.1003"></a>
<FONT color="green">1004</FONT>                                            srcWidth, srcHeight, padding, newWidth, newHeight);<a name="line.1004"></a>
<FONT color="green">1005</FONT>    <a name="line.1005"></a>
<FONT color="green">1006</FONT>                    boolean colorHasAlpha = (color.getAlpha() != 255);<a name="line.1006"></a>
<FONT color="green">1007</FONT>                    boolean imageHasAlpha = (src.getTransparency() != BufferedImage.OPAQUE);<a name="line.1007"></a>
<FONT color="green">1008</FONT>    <a name="line.1008"></a>
<FONT color="green">1009</FONT>                    BufferedImage result;<a name="line.1009"></a>
<FONT color="green">1010</FONT>    <a name="line.1010"></a>
<FONT color="green">1011</FONT>                    /*<a name="line.1011"></a>
<FONT color="green">1012</FONT>                     * We need to make sure our resulting image that we render into contains<a name="line.1012"></a>
<FONT color="green">1013</FONT>                     * alpha if either our original image OR the padding color we are using<a name="line.1013"></a>
<FONT color="green">1014</FONT>                     * contain it.<a name="line.1014"></a>
<FONT color="green">1015</FONT>                     */<a name="line.1015"></a>
<FONT color="green">1016</FONT>                    if (colorHasAlpha || imageHasAlpha) {<a name="line.1016"></a>
<FONT color="green">1017</FONT>                            if (DEBUG)<a name="line.1017"></a>
<FONT color="green">1018</FONT>                                    log(1,<a name="line.1018"></a>
<FONT color="green">1019</FONT>                                                    "Transparency FOUND in source image or color, using ARGB image type...");<a name="line.1019"></a>
<FONT color="green">1020</FONT>    <a name="line.1020"></a>
<FONT color="green">1021</FONT>                            result = new BufferedImage(newWidth, newHeight,<a name="line.1021"></a>
<FONT color="green">1022</FONT>                                            BufferedImage.TYPE_INT_ARGB);<a name="line.1022"></a>
<FONT color="green">1023</FONT>                    } else {<a name="line.1023"></a>
<FONT color="green">1024</FONT>                            if (DEBUG)<a name="line.1024"></a>
<FONT color="green">1025</FONT>                                    log(1,<a name="line.1025"></a>
<FONT color="green">1026</FONT>                                                    "Transparency NOT FOUND in source image or color, using RGB image type...");<a name="line.1026"></a>
<FONT color="green">1027</FONT>    <a name="line.1027"></a>
<FONT color="green">1028</FONT>                            result = new BufferedImage(newWidth, newHeight,<a name="line.1028"></a>
<FONT color="green">1029</FONT>                                            BufferedImage.TYPE_INT_RGB);<a name="line.1029"></a>
<FONT color="green">1030</FONT>                    }<a name="line.1030"></a>
<FONT color="green">1031</FONT>    <a name="line.1031"></a>
<FONT color="green">1032</FONT>                    Graphics g = result.getGraphics();<a name="line.1032"></a>
<FONT color="green">1033</FONT>    <a name="line.1033"></a>
<FONT color="green">1034</FONT>                    // "Clear" the background of the new image with our padding color first.<a name="line.1034"></a>
<FONT color="green">1035</FONT>                    g.setColor(color);<a name="line.1035"></a>
<FONT color="green">1036</FONT>                    g.fillRect(0, 0, newWidth, newHeight);<a name="line.1036"></a>
<FONT color="green">1037</FONT>    <a name="line.1037"></a>
<FONT color="green">1038</FONT>                    // Draw the image into the center of the new padded image.<a name="line.1038"></a>
<FONT color="green">1039</FONT>                    g.drawImage(src, padding, padding, null);<a name="line.1039"></a>
<FONT color="green">1040</FONT>                    g.dispose();<a name="line.1040"></a>
<FONT color="green">1041</FONT>    <a name="line.1041"></a>
<FONT color="green">1042</FONT>                    if (DEBUG)<a name="line.1042"></a>
<FONT color="green">1043</FONT>                            log(0, "Padding Applied in %d ms", System.currentTimeMillis() - t);<a name="line.1043"></a>
<FONT color="green">1044</FONT>    <a name="line.1044"></a>
<FONT color="green">1045</FONT>                    // Apply any optional operations (if specified).<a name="line.1045"></a>
<FONT color="green">1046</FONT>                    if (ops != null &amp;&amp; ops.length &gt; 0)<a name="line.1046"></a>
<FONT color="green">1047</FONT>                            result = apply(result, ops);<a name="line.1047"></a>
<FONT color="green">1048</FONT>    <a name="line.1048"></a>
<FONT color="green">1049</FONT>                    return result;<a name="line.1049"></a>
<FONT color="green">1050</FONT>            }<a name="line.1050"></a>
<FONT color="green">1051</FONT>    <a name="line.1051"></a>
<FONT color="green">1052</FONT>            /**<a name="line.1052"></a>
<FONT color="green">1053</FONT>             * Resize a given image (maintaining its original proportion) to a width and<a name="line.1053"></a>
<FONT color="green">1054</FONT>             * height no bigger than &lt;code&gt;targetSize&lt;/code&gt; and apply the given<a name="line.1054"></a>
<FONT color="green">1055</FONT>             * {@link BufferedImageOp}s (if any) to the result before returning it.<a name="line.1055"></a>
<FONT color="green">1056</FONT>             * &lt;p/&gt;<a name="line.1056"></a>
<FONT color="green">1057</FONT>             * A scaling method of {@link Method#AUTOMATIC} and mode of<a name="line.1057"></a>
<FONT color="green">1058</FONT>             * {@link Mode#AUTOMATIC} are used.<a name="line.1058"></a>
<FONT color="green">1059</FONT>             * &lt;p/&gt;<a name="line.1059"></a>
<FONT color="green">1060</FONT>             * &lt;strong&gt;TIP&lt;/strong&gt;: This operation leaves the original &lt;code&gt;src&lt;/code&gt;<a name="line.1060"></a>
<FONT color="green">1061</FONT>             * image unmodified. If the caller is done with the &lt;code&gt;src&lt;/code&gt; image<a name="line.1061"></a>
<FONT color="green">1062</FONT>             * after getting the result of this operation, remember to call<a name="line.1062"></a>
<FONT color="green">1063</FONT>             * {@link BufferedImage#flush()} on the &lt;code&gt;src&lt;/code&gt; to free up native<a name="line.1063"></a>
<FONT color="green">1064</FONT>             * resources and make it easier for the GC to collect the unused image.<a name="line.1064"></a>
<FONT color="green">1065</FONT>             * <a name="line.1065"></a>
<FONT color="green">1066</FONT>             * @param src<a name="line.1066"></a>
<FONT color="green">1067</FONT>             *            The image that will be scaled.<a name="line.1067"></a>
<FONT color="green">1068</FONT>             * @param targetSize<a name="line.1068"></a>
<FONT color="green">1069</FONT>             *            The target width and height (square) that you wish the image<a name="line.1069"></a>
<FONT color="green">1070</FONT>             *            to fit within.<a name="line.1070"></a>
<FONT color="green">1071</FONT>             * @param ops<a name="line.1071"></a>
<FONT color="green">1072</FONT>             *            &lt;code&gt;0&lt;/code&gt; or more optional image operations (e.g.<a name="line.1072"></a>
<FONT color="green">1073</FONT>             *            sharpen, blur, etc.) that can be applied to the final result<a name="line.1073"></a>
<FONT color="green">1074</FONT>             *            before returning the image.<a name="line.1074"></a>
<FONT color="green">1075</FONT>             * <a name="line.1075"></a>
<FONT color="green">1076</FONT>             * @return a new {@link BufferedImage} representing the scaled<a name="line.1076"></a>
<FONT color="green">1077</FONT>             *         &lt;code&gt;src&lt;/code&gt; image.<a name="line.1077"></a>
<FONT color="green">1078</FONT>             * <a name="line.1078"></a>
<FONT color="green">1079</FONT>             * @throws IllegalArgumentException<a name="line.1079"></a>
<FONT color="green">1080</FONT>             *             if &lt;code&gt;src&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt;.<a name="line.1080"></a>
<FONT color="green">1081</FONT>             * @throws IllegalArgumentException<a name="line.1081"></a>
<FONT color="green">1082</FONT>             *             if &lt;code&gt;targetSize&lt;/code&gt; is &amp;lt; 0.<a name="line.1082"></a>
<FONT color="green">1083</FONT>             * @throws ImagingOpException<a name="line.1083"></a>
<FONT color="green">1084</FONT>             *             if one of the given {@link BufferedImageOp}s fails to apply.<a name="line.1084"></a>
<FONT color="green">1085</FONT>             *             These exceptions bubble up from the inside of most of the<a name="line.1085"></a>
<FONT color="green">1086</FONT>             *             {@link BufferedImageOp} implementations and are explicitly<a name="line.1086"></a>
<FONT color="green">1087</FONT>             *             defined on the imgscalr API to make it easier for callers to<a name="line.1087"></a>
<FONT color="green">1088</FONT>             *             catch the exception (if they are passing along optional ops<a name="line.1088"></a>
<FONT color="green">1089</FONT>             *             to be applied). imgscalr takes detailed steps to avoid the<a name="line.1089"></a>
<FONT color="green">1090</FONT>             *             most common pitfalls that will cause {@link BufferedImageOp}s<a name="line.1090"></a>
<FONT color="green">1091</FONT>             *             to fail, even when using straight forward JDK-image<a name="line.1091"></a>
<FONT color="green">1092</FONT>             *             operations.<a name="line.1092"></a>
<FONT color="green">1093</FONT>             */<a name="line.1093"></a>
<FONT color="green">1094</FONT>            public static BufferedImage resize(BufferedImage src, int targetSize,<a name="line.1094"></a>
<FONT color="green">1095</FONT>                            BufferedImageOp... ops) throws IllegalArgumentException,<a name="line.1095"></a>
<FONT color="green">1096</FONT>                            ImagingOpException {<a name="line.1096"></a>
<FONT color="green">1097</FONT>                    return resize(src, Method.AUTOMATIC, Mode.AUTOMATIC, targetSize,<a name="line.1097"></a>
<FONT color="green">1098</FONT>                                    targetSize, ops);<a name="line.1098"></a>
<FONT color="green">1099</FONT>            }<a name="line.1099"></a>
<FONT color="green">1100</FONT>    <a name="line.1100"></a>
<FONT color="green">1101</FONT>            /**<a name="line.1101"></a>
<FONT color="green">1102</FONT>             * Resize a given image (maintaining its original proportion) to a width and<a name="line.1102"></a>
<FONT color="green">1103</FONT>             * height no bigger than &lt;code&gt;targetSize&lt;/code&gt; using the given scaling<a name="line.1103"></a>
<FONT color="green">1104</FONT>             * method and apply the given {@link BufferedImageOp}s (if any) to the<a name="line.1104"></a>
<FONT color="green">1105</FONT>             * result before returning it.<a name="line.1105"></a>
<FONT color="green">1106</FONT>             * &lt;p/&gt;<a name="line.1106"></a>
<FONT color="green">1107</FONT>             * A mode of {@link Mode#AUTOMATIC} is used.<a name="line.1107"></a>
<FONT color="green">1108</FONT>             * &lt;p/&gt;<a name="line.1108"></a>
<FONT color="green">1109</FONT>             * &lt;strong&gt;TIP&lt;/strong&gt;: This operation leaves the original &lt;code&gt;src&lt;/code&gt;<a name="line.1109"></a>
<FONT color="green">1110</FONT>             * image unmodified. If the caller is done with the &lt;code&gt;src&lt;/code&gt; image<a name="line.1110"></a>
<FONT color="green">1111</FONT>             * after getting the result of this operation, remember to call<a name="line.1111"></a>
<FONT color="green">1112</FONT>             * {@link BufferedImage#flush()} on the &lt;code&gt;src&lt;/code&gt; to free up native<a name="line.1112"></a>
<FONT color="green">1113</FONT>             * resources and make it easier for the GC to collect the unused image.<a name="line.1113"></a>
<FONT color="green">1114</FONT>             * <a name="line.1114"></a>
<FONT color="green">1115</FONT>             * @param src<a name="line.1115"></a>
<FONT color="green">1116</FONT>             *            The image that will be scaled.<a name="line.1116"></a>
<FONT color="green">1117</FONT>             * @param scalingMethod<a name="line.1117"></a>
<FONT color="green">1118</FONT>             *            The method used for scaling the image; preferring speed to<a name="line.1118"></a>
<FONT color="green">1119</FONT>             *            quality or a balance of both.<a name="line.1119"></a>
<FONT color="green">1120</FONT>             * @param targetSize<a name="line.1120"></a>
<FONT color="green">1121</FONT>             *            The target width and height (square) that you wish the image<a name="line.1121"></a>
<FONT color="green">1122</FONT>             *            to fit within.<a name="line.1122"></a>
<FONT color="green">1123</FONT>             * @param ops<a name="line.1123"></a>
<FONT color="green">1124</FONT>             *            &lt;code&gt;0&lt;/code&gt; or more optional image operations (e.g.<a name="line.1124"></a>
<FONT color="green">1125</FONT>             *            sharpen, blur, etc.) that can be applied to the final result<a name="line.1125"></a>
<FONT color="green">1126</FONT>             *            before returning the image.<a name="line.1126"></a>
<FONT color="green">1127</FONT>             * <a name="line.1127"></a>
<FONT color="green">1128</FONT>             * @return a new {@link BufferedImage} representing the scaled<a name="line.1128"></a>
<FONT color="green">1129</FONT>             *         &lt;code&gt;src&lt;/code&gt; image.<a name="line.1129"></a>
<FONT color="green">1130</FONT>             * <a name="line.1130"></a>
<FONT color="green">1131</FONT>             * @throws IllegalArgumentException<a name="line.1131"></a>
<FONT color="green">1132</FONT>             *             if &lt;code&gt;src&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt;.<a name="line.1132"></a>
<FONT color="green">1133</FONT>             * @throws IllegalArgumentException<a name="line.1133"></a>
<FONT color="green">1134</FONT>             *             if &lt;code&gt;scalingMethod&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt;.<a name="line.1134"></a>
<FONT color="green">1135</FONT>             * @throws IllegalArgumentException<a name="line.1135"></a>
<FONT color="green">1136</FONT>             *             if &lt;code&gt;targetSize&lt;/code&gt; is &amp;lt; 0.<a name="line.1136"></a>
<FONT color="green">1137</FONT>             * @throws ImagingOpException<a name="line.1137"></a>
<FONT color="green">1138</FONT>             *             if one of the given {@link BufferedImageOp}s fails to apply.<a name="line.1138"></a>
<FONT color="green">1139</FONT>             *             These exceptions bubble up from the inside of most of the<a name="line.1139"></a>
<FONT color="green">1140</FONT>             *             {@link BufferedImageOp} implementations and are explicitly<a name="line.1140"></a>
<FONT color="green">1141</FONT>             *             defined on the imgscalr API to make it easier for callers to<a name="line.1141"></a>
<FONT color="green">1142</FONT>             *             catch the exception (if they are passing along optional ops<a name="line.1142"></a>
<FONT color="green">1143</FONT>             *             to be applied). imgscalr takes detailed steps to avoid the<a name="line.1143"></a>
<FONT color="green">1144</FONT>             *             most common pitfalls that will cause {@link BufferedImageOp}s<a name="line.1144"></a>
<FONT color="green">1145</FONT>             *             to fail, even when using straight forward JDK-image<a name="line.1145"></a>
<FONT color="green">1146</FONT>             *             operations.<a name="line.1146"></a>
<FONT color="green">1147</FONT>             * <a name="line.1147"></a>
<FONT color="green">1148</FONT>             * @see Method<a name="line.1148"></a>
<FONT color="green">1149</FONT>             */<a name="line.1149"></a>
<FONT color="green">1150</FONT>            public static BufferedImage resize(BufferedImage src, Method scalingMethod,<a name="line.1150"></a>
<FONT color="green">1151</FONT>                            int targetSize, BufferedImageOp... ops)<a name="line.1151"></a>
<FONT color="green">1152</FONT>                            throws IllegalArgumentException, ImagingOpException {<a name="line.1152"></a>
<FONT color="green">1153</FONT>                    return resize(src, scalingMethod, Mode.AUTOMATIC, targetSize,<a name="line.1153"></a>
<FONT color="green">1154</FONT>                                    targetSize, ops);<a name="line.1154"></a>
<FONT color="green">1155</FONT>            }<a name="line.1155"></a>
<FONT color="green">1156</FONT>    <a name="line.1156"></a>
<FONT color="green">1157</FONT>            /**<a name="line.1157"></a>
<FONT color="green">1158</FONT>             * Resize a given image (maintaining its original proportion) to a width and<a name="line.1158"></a>
<FONT color="green">1159</FONT>             * height no bigger than &lt;code&gt;targetSize&lt;/code&gt; (or fitting the image to<a name="line.1159"></a>
<FONT color="green">1160</FONT>             * the given WIDTH or HEIGHT explicitly, depending on the {@link Mode}<a name="line.1160"></a>
<FONT color="green">1161</FONT>             * specified) and apply the given {@link BufferedImageOp}s (if any) to the<a name="line.1161"></a>
<FONT color="green">1162</FONT>             * result before returning it.<a name="line.1162"></a>
<FONT color="green">1163</FONT>             * &lt;p/&gt;<a name="line.1163"></a>
<FONT color="green">1164</FONT>             * A scaling method of {@link Method#AUTOMATIC} is used.<a name="line.1164"></a>
<FONT color="green">1165</FONT>             * &lt;p/&gt;<a name="line.1165"></a>
<FONT color="green">1166</FONT>             * &lt;strong&gt;TIP&lt;/strong&gt;: This operation leaves the original &lt;code&gt;src&lt;/code&gt;<a name="line.1166"></a>
<FONT color="green">1167</FONT>             * image unmodified. If the caller is done with the &lt;code&gt;src&lt;/code&gt; image<a name="line.1167"></a>
<FONT color="green">1168</FONT>             * after getting the result of this operation, remember to call<a name="line.1168"></a>
<FONT color="green">1169</FONT>             * {@link BufferedImage#flush()} on the &lt;code&gt;src&lt;/code&gt; to free up native<a name="line.1169"></a>
<FONT color="green">1170</FONT>             * resources and make it easier for the GC to collect the unused image.<a name="line.1170"></a>
<FONT color="green">1171</FONT>             * <a name="line.1171"></a>
<FONT color="green">1172</FONT>             * @param src<a name="line.1172"></a>
<FONT color="green">1173</FONT>             *            The image that will be scaled.<a name="line.1173"></a>
<FONT color="green">1174</FONT>             * @param resizeMode<a name="line.1174"></a>
<FONT color="green">1175</FONT>             *            Used to indicate how imgscalr should calculate the final<a name="line.1175"></a>
<FONT color="green">1176</FONT>             *            target size for the image, either fitting the image to the<a name="line.1176"></a>
<FONT color="green">1177</FONT>             *            given width ({@link Mode#FIT_TO_WIDTH}) or fitting the image<a name="line.1177"></a>
<FONT color="green">1178</FONT>             *            to the given height ({@link Mode#FIT_TO_HEIGHT}). If<a name="line.1178"></a>
<FONT color="green">1179</FONT>             *            {@link Mode#AUTOMATIC} is passed in, imgscalr will calculate<a name="line.1179"></a>
<FONT color="green">1180</FONT>             *            proportional dimensions for the scaled image based on its<a name="line.1180"></a>
<FONT color="green">1181</FONT>             *            orientation (landscape, square or portrait). Unless you have<a name="line.1181"></a>
<FONT color="green">1182</FONT>             *            very specific size requirements, most of the time you just<a name="line.1182"></a>
<FONT color="green">1183</FONT>             *            want to use {@link Mode#AUTOMATIC} to "do the right thing".<a name="line.1183"></a>
<FONT color="green">1184</FONT>             * @param targetSize<a name="line.1184"></a>
<FONT color="green">1185</FONT>             *            The target width and height (square) that you wish the image<a name="line.1185"></a>
<FONT color="green">1186</FONT>             *            to fit within.<a name="line.1186"></a>
<FONT color="green">1187</FONT>             * @param ops<a name="line.1187"></a>
<FONT color="green">1188</FONT>             *            &lt;code&gt;0&lt;/code&gt; or more optional image operations (e.g.<a name="line.1188"></a>
<FONT color="green">1189</FONT>             *            sharpen, blur, etc.) that can be applied to the final result<a name="line.1189"></a>
<FONT color="green">1190</FONT>             *            before returning the image.<a name="line.1190"></a>
<FONT color="green">1191</FONT>             * <a name="line.1191"></a>
<FONT color="green">1192</FONT>             * @return a new {@link BufferedImage} representing the scaled<a name="line.1192"></a>
<FONT color="green">1193</FONT>             *         &lt;code&gt;src&lt;/code&gt; image.<a name="line.1193"></a>
<FONT color="green">1194</FONT>             * <a name="line.1194"></a>
<FONT color="green">1195</FONT>             * @throws IllegalArgumentException<a name="line.1195"></a>
<FONT color="green">1196</FONT>             *             if &lt;code&gt;src&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt;.<a name="line.1196"></a>
<FONT color="green">1197</FONT>             * @throws IllegalArgumentException<a name="line.1197"></a>
<FONT color="green">1198</FONT>             *             if &lt;code&gt;resizeMode&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt;.<a name="line.1198"></a>
<FONT color="green">1199</FONT>             * @throws IllegalArgumentException<a name="line.1199"></a>
<FONT color="green">1200</FONT>             *             if &lt;code&gt;targetSize&lt;/code&gt; is &amp;lt; 0.<a name="line.1200"></a>
<FONT color="green">1201</FONT>             * @throws ImagingOpException<a name="line.1201"></a>
<FONT color="green">1202</FONT>             *             if one of the given {@link BufferedImageOp}s fails to apply.<a name="line.1202"></a>
<FONT color="green">1203</FONT>             *             These exceptions bubble up from the inside of most of the<a name="line.1203"></a>
<FONT color="green">1204</FONT>             *             {@link BufferedImageOp} implementations and are explicitly<a name="line.1204"></a>
<FONT color="green">1205</FONT>             *             defined on the imgscalr API to make it easier for callers to<a name="line.1205"></a>
<FONT color="green">1206</FONT>             *             catch the exception (if they are passing along optional ops<a name="line.1206"></a>
<FONT color="green">1207</FONT>             *             to be applied). imgscalr takes detailed steps to avoid the<a name="line.1207"></a>
<FONT color="green">1208</FONT>             *             most common pitfalls that will cause {@link BufferedImageOp}s<a name="line.1208"></a>
<FONT color="green">1209</FONT>             *             to fail, even when using straight forward JDK-image<a name="line.1209"></a>
<FONT color="green">1210</FONT>             *             operations.<a name="line.1210"></a>
<FONT color="green">1211</FONT>             * <a name="line.1211"></a>
<FONT color="green">1212</FONT>             * @see Mode<a name="line.1212"></a>
<FONT color="green">1213</FONT>             */<a name="line.1213"></a>
<FONT color="green">1214</FONT>            public static BufferedImage resize(BufferedImage src, Mode resizeMode,<a name="line.1214"></a>
<FONT color="green">1215</FONT>                            int targetSize, BufferedImageOp... ops)<a name="line.1215"></a>
<FONT color="green">1216</FONT>                            throws IllegalArgumentException, ImagingOpException {<a name="line.1216"></a>
<FONT color="green">1217</FONT>                    return resize(src, Method.AUTOMATIC, resizeMode, targetSize,<a name="line.1217"></a>
<FONT color="green">1218</FONT>                                    targetSize, ops);<a name="line.1218"></a>
<FONT color="green">1219</FONT>            }<a name="line.1219"></a>
<FONT color="green">1220</FONT>    <a name="line.1220"></a>
<FONT color="green">1221</FONT>            /**<a name="line.1221"></a>
<FONT color="green">1222</FONT>             * Resize a given image (maintaining its original proportion) to a width and<a name="line.1222"></a>
<FONT color="green">1223</FONT>             * height no bigger than &lt;code&gt;targetSize&lt;/code&gt; (or fitting the image to<a name="line.1223"></a>
<FONT color="green">1224</FONT>             * the given WIDTH or HEIGHT explicitly, depending on the {@link Mode}<a name="line.1224"></a>
<FONT color="green">1225</FONT>             * specified) using the given scaling method and apply the given<a name="line.1225"></a>
<FONT color="green">1226</FONT>             * {@link BufferedImageOp}s (if any) to the result before returning it.<a name="line.1226"></a>
<FONT color="green">1227</FONT>             * &lt;p/&gt;<a name="line.1227"></a>
<FONT color="green">1228</FONT>             * &lt;strong&gt;TIP&lt;/strong&gt;: This operation leaves the original &lt;code&gt;src&lt;/code&gt;<a name="line.1228"></a>
<FONT color="green">1229</FONT>             * image unmodified. If the caller is done with the &lt;code&gt;src&lt;/code&gt; image<a name="line.1229"></a>
<FONT color="green">1230</FONT>             * after getting the result of this operation, remember to call<a name="line.1230"></a>
<FONT color="green">1231</FONT>             * {@link BufferedImage#flush()} on the &lt;code&gt;src&lt;/code&gt; to free up native<a name="line.1231"></a>
<FONT color="green">1232</FONT>             * resources and make it easier for the GC to collect the unused image.<a name="line.1232"></a>
<FONT color="green">1233</FONT>             * <a name="line.1233"></a>
<FONT color="green">1234</FONT>             * @param src<a name="line.1234"></a>
<FONT color="green">1235</FONT>             *            The image that will be scaled.<a name="line.1235"></a>
<FONT color="green">1236</FONT>             * @param scalingMethod<a name="line.1236"></a>
<FONT color="green">1237</FONT>             *            The method used for scaling the image; preferring speed to<a name="line.1237"></a>
<FONT color="green">1238</FONT>             *            quality or a balance of both.<a name="line.1238"></a>
<FONT color="green">1239</FONT>             * @param resizeMode<a name="line.1239"></a>
<FONT color="green">1240</FONT>             *            Used to indicate how imgscalr should calculate the final<a name="line.1240"></a>
<FONT color="green">1241</FONT>             *            target size for the image, either fitting the image to the<a name="line.1241"></a>
<FONT color="green">1242</FONT>             *            given width ({@link Mode#FIT_TO_WIDTH}) or fitting the image<a name="line.1242"></a>
<FONT color="green">1243</FONT>             *            to the given height ({@link Mode#FIT_TO_HEIGHT}). If<a name="line.1243"></a>
<FONT color="green">1244</FONT>             *            {@link Mode#AUTOMATIC} is passed in, imgscalr will calculate<a name="line.1244"></a>
<FONT color="green">1245</FONT>             *            proportional dimensions for the scaled image based on its<a name="line.1245"></a>
<FONT color="green">1246</FONT>             *            orientation (landscape, square or portrait). Unless you have<a name="line.1246"></a>
<FONT color="green">1247</FONT>             *            very specific size requirements, most of the time you just<a name="line.1247"></a>
<FONT color="green">1248</FONT>             *            want to use {@link Mode#AUTOMATIC} to "do the right thing".<a name="line.1248"></a>
<FONT color="green">1249</FONT>             * @param targetSize<a name="line.1249"></a>
<FONT color="green">1250</FONT>             *            The target width and height (square) that you wish the image<a name="line.1250"></a>
<FONT color="green">1251</FONT>             *            to fit within.<a name="line.1251"></a>
<FONT color="green">1252</FONT>             * @param ops<a name="line.1252"></a>
<FONT color="green">1253</FONT>             *            &lt;code&gt;0&lt;/code&gt; or more optional image operations (e.g.<a name="line.1253"></a>
<FONT color="green">1254</FONT>             *            sharpen, blur, etc.) that can be applied to the final result<a name="line.1254"></a>
<FONT color="green">1255</FONT>             *            before returning the image.<a name="line.1255"></a>
<FONT color="green">1256</FONT>             * <a name="line.1256"></a>
<FONT color="green">1257</FONT>             * @return a new {@link BufferedImage} representing the scaled<a name="line.1257"></a>
<FONT color="green">1258</FONT>             *         &lt;code&gt;src&lt;/code&gt; image.<a name="line.1258"></a>
<FONT color="green">1259</FONT>             * <a name="line.1259"></a>
<FONT color="green">1260</FONT>             * @throws IllegalArgumentException<a name="line.1260"></a>
<FONT color="green">1261</FONT>             *             if &lt;code&gt;src&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt;.<a name="line.1261"></a>
<FONT color="green">1262</FONT>             * @throws IllegalArgumentException<a name="line.1262"></a>
<FONT color="green">1263</FONT>             *             if &lt;code&gt;scalingMethod&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt;.<a name="line.1263"></a>
<FONT color="green">1264</FONT>             * @throws IllegalArgumentException<a name="line.1264"></a>
<FONT color="green">1265</FONT>             *             if &lt;code&gt;resizeMode&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt;.<a name="line.1265"></a>
<FONT color="green">1266</FONT>             * @throws IllegalArgumentException<a name="line.1266"></a>
<FONT color="green">1267</FONT>             *             if &lt;code&gt;targetSize&lt;/code&gt; is &amp;lt; 0.<a name="line.1267"></a>
<FONT color="green">1268</FONT>             * @throws ImagingOpException<a name="line.1268"></a>
<FONT color="green">1269</FONT>             *             if one of the given {@link BufferedImageOp}s fails to apply.<a name="line.1269"></a>
<FONT color="green">1270</FONT>             *             These exceptions bubble up from the inside of most of the<a name="line.1270"></a>
<FONT color="green">1271</FONT>             *             {@link BufferedImageOp} implementations and are explicitly<a name="line.1271"></a>
<FONT color="green">1272</FONT>             *             defined on the imgscalr API to make it easier for callers to<a name="line.1272"></a>
<FONT color="green">1273</FONT>             *             catch the exception (if they are passing along optional ops<a name="line.1273"></a>
<FONT color="green">1274</FONT>             *             to be applied). imgscalr takes detailed steps to avoid the<a name="line.1274"></a>
<FONT color="green">1275</FONT>             *             most common pitfalls that will cause {@link BufferedImageOp}s<a name="line.1275"></a>
<FONT color="green">1276</FONT>             *             to fail, even when using straight forward JDK-image<a name="line.1276"></a>
<FONT color="green">1277</FONT>             *             operations.<a name="line.1277"></a>
<FONT color="green">1278</FONT>             * <a name="line.1278"></a>
<FONT color="green">1279</FONT>             * @see Method<a name="line.1279"></a>
<FONT color="green">1280</FONT>             * @see Mode<a name="line.1280"></a>
<FONT color="green">1281</FONT>             */<a name="line.1281"></a>
<FONT color="green">1282</FONT>            public static BufferedImage resize(BufferedImage src, Method scalingMethod,<a name="line.1282"></a>
<FONT color="green">1283</FONT>                            Mode resizeMode, int targetSize, BufferedImageOp... ops)<a name="line.1283"></a>
<FONT color="green">1284</FONT>                            throws IllegalArgumentException, ImagingOpException {<a name="line.1284"></a>
<FONT color="green">1285</FONT>                    return resize(src, scalingMethod, resizeMode, targetSize, targetSize,<a name="line.1285"></a>
<FONT color="green">1286</FONT>                                    ops);<a name="line.1286"></a>
<FONT color="green">1287</FONT>            }<a name="line.1287"></a>
<FONT color="green">1288</FONT>    <a name="line.1288"></a>
<FONT color="green">1289</FONT>            /**<a name="line.1289"></a>
<FONT color="green">1290</FONT>             * Resize a given image (maintaining its original proportion) to the target<a name="line.1290"></a>
<FONT color="green">1291</FONT>             * width and height and apply the given {@link BufferedImageOp}s (if any) to<a name="line.1291"></a>
<FONT color="green">1292</FONT>             * the result before returning it.<a name="line.1292"></a>
<FONT color="green">1293</FONT>             * &lt;p/&gt;<a name="line.1293"></a>
<FONT color="green">1294</FONT>             * A scaling method of {@link Method#AUTOMATIC} and mode of<a name="line.1294"></a>
<FONT color="green">1295</FONT>             * {@link Mode#AUTOMATIC} are used.<a name="line.1295"></a>
<FONT color="green">1296</FONT>             * &lt;p/&gt;<a name="line.1296"></a>
<FONT color="green">1297</FONT>             * &lt;strong&gt;TIP&lt;/strong&gt;: See the class description to understand how this<a name="line.1297"></a>
<FONT color="green">1298</FONT>             * class handles recalculation of the &lt;code&gt;targetWidth&lt;/code&gt; or<a name="line.1298"></a>
<FONT color="green">1299</FONT>             * &lt;code&gt;targetHeight&lt;/code&gt; depending on the image's orientation in order<a name="line.1299"></a>
<FONT color="green">1300</FONT>             * to maintain the original proportion.<a name="line.1300"></a>
<FONT color="green">1301</FONT>             * &lt;p/&gt;<a name="line.1301"></a>
<FONT color="green">1302</FONT>             * &lt;strong&gt;TIP&lt;/strong&gt;: This operation leaves the original &lt;code&gt;src&lt;/code&gt;<a name="line.1302"></a>
<FONT color="green">1303</FONT>             * image unmodified. If the caller is done with the &lt;code&gt;src&lt;/code&gt; image<a name="line.1303"></a>
<FONT color="green">1304</FONT>             * after getting the result of this operation, remember to call<a name="line.1304"></a>
<FONT color="green">1305</FONT>             * {@link BufferedImage#flush()} on the &lt;code&gt;src&lt;/code&gt; to free up native<a name="line.1305"></a>
<FONT color="green">1306</FONT>             * resources and make it easier for the GC to collect the unused image.<a name="line.1306"></a>
<FONT color="green">1307</FONT>             * <a name="line.1307"></a>
<FONT color="green">1308</FONT>             * @param src<a name="line.1308"></a>
<FONT color="green">1309</FONT>             *            The image that will be scaled.<a name="line.1309"></a>
<FONT color="green">1310</FONT>             * @param targetWidth<a name="line.1310"></a>
<FONT color="green">1311</FONT>             *            The target width that you wish the image to have.<a name="line.1311"></a>
<FONT color="green">1312</FONT>             * @param targetHeight<a name="line.1312"></a>
<FONT color="green">1313</FONT>             *            The target height that you wish the image to have.<a name="line.1313"></a>
<FONT color="green">1314</FONT>             * @param ops<a name="line.1314"></a>
<FONT color="green">1315</FONT>             *            &lt;code&gt;0&lt;/code&gt; or more optional image operations (e.g.<a name="line.1315"></a>
<FONT color="green">1316</FONT>             *            sharpen, blur, etc.) that can be applied to the final result<a name="line.1316"></a>
<FONT color="green">1317</FONT>             *            before returning the image.<a name="line.1317"></a>
<FONT color="green">1318</FONT>             * <a name="line.1318"></a>
<FONT color="green">1319</FONT>             * @return a new {@link BufferedImage} representing the scaled<a name="line.1319"></a>
<FONT color="green">1320</FONT>             *         &lt;code&gt;src&lt;/code&gt; image.<a name="line.1320"></a>
<FONT color="green">1321</FONT>             * <a name="line.1321"></a>
<FONT color="green">1322</FONT>             * @throws IllegalArgumentException<a name="line.1322"></a>
<FONT color="green">1323</FONT>             *             if &lt;code&gt;src&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt;.<a name="line.1323"></a>
<FONT color="green">1324</FONT>             * @throws IllegalArgumentException<a name="line.1324"></a>
<FONT color="green">1325</FONT>             *             if &lt;code&gt;targetWidth&lt;/code&gt; is &amp;lt; 0 or if<a name="line.1325"></a>
<FONT color="green">1326</FONT>             *             &lt;code&gt;targetHeight&lt;/code&gt; is &amp;lt; 0.<a name="line.1326"></a>
<FONT color="green">1327</FONT>             * @throws ImagingOpException<a name="line.1327"></a>
<FONT color="green">1328</FONT>             *             if one of the given {@link BufferedImageOp}s fails to apply.<a name="line.1328"></a>
<FONT color="green">1329</FONT>             *             These exceptions bubble up from the inside of most of the<a name="line.1329"></a>
<FONT color="green">1330</FONT>             *             {@link BufferedImageOp} implementations and are explicitly<a name="line.1330"></a>
<FONT color="green">1331</FONT>             *             defined on the imgscalr API to make it easier for callers to<a name="line.1331"></a>
<FONT color="green">1332</FONT>             *             catch the exception (if they are passing along optional ops<a name="line.1332"></a>
<FONT color="green">1333</FONT>             *             to be applied). imgscalr takes detailed steps to avoid the<a name="line.1333"></a>
<FONT color="green">1334</FONT>             *             most common pitfalls that will cause {@link BufferedImageOp}s<a name="line.1334"></a>
<FONT color="green">1335</FONT>             *             to fail, even when using straight forward JDK-image<a name="line.1335"></a>
<FONT color="green">1336</FONT>             *             operations.<a name="line.1336"></a>
<FONT color="green">1337</FONT>             */<a name="line.1337"></a>
<FONT color="green">1338</FONT>            public static BufferedImage resize(BufferedImage src, int targetWidth,<a name="line.1338"></a>
<FONT color="green">1339</FONT>                            int targetHeight, BufferedImageOp... ops)<a name="line.1339"></a>
<FONT color="green">1340</FONT>                            throws IllegalArgumentException, ImagingOpException {<a name="line.1340"></a>
<FONT color="green">1341</FONT>                    return resize(src, Method.AUTOMATIC, Mode.AUTOMATIC, targetWidth,<a name="line.1341"></a>
<FONT color="green">1342</FONT>                                    targetHeight, ops);<a name="line.1342"></a>
<FONT color="green">1343</FONT>            }<a name="line.1343"></a>
<FONT color="green">1344</FONT>    <a name="line.1344"></a>
<FONT color="green">1345</FONT>            /**<a name="line.1345"></a>
<FONT color="green">1346</FONT>             * Resize a given image (maintaining its original proportion) to the target<a name="line.1346"></a>
<FONT color="green">1347</FONT>             * width and height using the given scaling method and apply the given<a name="line.1347"></a>
<FONT color="green">1348</FONT>             * {@link BufferedImageOp}s (if any) to the result before returning it.<a name="line.1348"></a>
<FONT color="green">1349</FONT>             * &lt;p/&gt;<a name="line.1349"></a>
<FONT color="green">1350</FONT>             * A mode of {@link Mode#AUTOMATIC} is used.<a name="line.1350"></a>
<FONT color="green">1351</FONT>             * &lt;p/&gt;<a name="line.1351"></a>
<FONT color="green">1352</FONT>             * &lt;strong&gt;TIP&lt;/strong&gt;: See the class description to understand how this<a name="line.1352"></a>
<FONT color="green">1353</FONT>             * class handles recalculation of the &lt;code&gt;targetWidth&lt;/code&gt; or<a name="line.1353"></a>
<FONT color="green">1354</FONT>             * &lt;code&gt;targetHeight&lt;/code&gt; depending on the image's orientation in order<a name="line.1354"></a>
<FONT color="green">1355</FONT>             * to maintain the original proportion.<a name="line.1355"></a>
<FONT color="green">1356</FONT>             * &lt;p/&gt;<a name="line.1356"></a>
<FONT color="green">1357</FONT>             * &lt;strong&gt;TIP&lt;/strong&gt;: This operation leaves the original &lt;code&gt;src&lt;/code&gt;<a name="line.1357"></a>
<FONT color="green">1358</FONT>             * image unmodified. If the caller is done with the &lt;code&gt;src&lt;/code&gt; image<a name="line.1358"></a>
<FONT color="green">1359</FONT>             * after getting the result of this operation, remember to call<a name="line.1359"></a>
<FONT color="green">1360</FONT>             * {@link BufferedImage#flush()} on the &lt;code&gt;src&lt;/code&gt; to free up native<a name="line.1360"></a>
<FONT color="green">1361</FONT>             * resources and make it easier for the GC to collect the unused image.<a name="line.1361"></a>
<FONT color="green">1362</FONT>             * <a name="line.1362"></a>
<FONT color="green">1363</FONT>             * @param src<a name="line.1363"></a>
<FONT color="green">1364</FONT>             *            The image that will be scaled.<a name="line.1364"></a>
<FONT color="green">1365</FONT>             * @param scalingMethod<a name="line.1365"></a>
<FONT color="green">1366</FONT>             *            The method used for scaling the image; preferring speed to<a name="line.1366"></a>
<FONT color="green">1367</FONT>             *            quality or a balance of both.<a name="line.1367"></a>
<FONT color="green">1368</FONT>             * @param targetWidth<a name="line.1368"></a>
<FONT color="green">1369</FONT>             *            The target width that you wish the image to have.<a name="line.1369"></a>
<FONT color="green">1370</FONT>             * @param targetHeight<a name="line.1370"></a>
<FONT color="green">1371</FONT>             *            The target height that you wish the image to have.<a name="line.1371"></a>
<FONT color="green">1372</FONT>             * @param ops<a name="line.1372"></a>
<FONT color="green">1373</FONT>             *            &lt;code&gt;0&lt;/code&gt; or more optional image operations (e.g.<a name="line.1373"></a>
<FONT color="green">1374</FONT>             *            sharpen, blur, etc.) that can be applied to the final result<a name="line.1374"></a>
<FONT color="green">1375</FONT>             *            before returning the image.<a name="line.1375"></a>
<FONT color="green">1376</FONT>             * <a name="line.1376"></a>
<FONT color="green">1377</FONT>             * @return a new {@link BufferedImage} representing the scaled<a name="line.1377"></a>
<FONT color="green">1378</FONT>             *         &lt;code&gt;src&lt;/code&gt; image.<a name="line.1378"></a>
<FONT color="green">1379</FONT>             * <a name="line.1379"></a>
<FONT color="green">1380</FONT>             * @throws IllegalArgumentException<a name="line.1380"></a>
<FONT color="green">1381</FONT>             *             if &lt;code&gt;src&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt;.<a name="line.1381"></a>
<FONT color="green">1382</FONT>             * @throws IllegalArgumentException<a name="line.1382"></a>
<FONT color="green">1383</FONT>             *             if &lt;code&gt;scalingMethod&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt;.<a name="line.1383"></a>
<FONT color="green">1384</FONT>             * @throws IllegalArgumentException<a name="line.1384"></a>
<FONT color="green">1385</FONT>             *             if &lt;code&gt;targetWidth&lt;/code&gt; is &amp;lt; 0 or if<a name="line.1385"></a>
<FONT color="green">1386</FONT>             *             &lt;code&gt;targetHeight&lt;/code&gt; is &amp;lt; 0.<a name="line.1386"></a>
<FONT color="green">1387</FONT>             * @throws ImagingOpException<a name="line.1387"></a>
<FONT color="green">1388</FONT>             *             if one of the given {@link BufferedImageOp}s fails to apply.<a name="line.1388"></a>
<FONT color="green">1389</FONT>             *             These exceptions bubble up from the inside of most of the<a name="line.1389"></a>
<FONT color="green">1390</FONT>             *             {@link BufferedImageOp} implementations and are explicitly<a name="line.1390"></a>
<FONT color="green">1391</FONT>             *             defined on the imgscalr API to make it easier for callers to<a name="line.1391"></a>
<FONT color="green">1392</FONT>             *             catch the exception (if they are passing along optional ops<a name="line.1392"></a>
<FONT color="green">1393</FONT>             *             to be applied). imgscalr takes detailed steps to avoid the<a name="line.1393"></a>
<FONT color="green">1394</FONT>             *             most common pitfalls that will cause {@link BufferedImageOp}s<a name="line.1394"></a>
<FONT color="green">1395</FONT>             *             to fail, even when using straight forward JDK-image<a name="line.1395"></a>
<FONT color="green">1396</FONT>             *             operations.<a name="line.1396"></a>
<FONT color="green">1397</FONT>             * <a name="line.1397"></a>
<FONT color="green">1398</FONT>             * @see Method<a name="line.1398"></a>
<FONT color="green">1399</FONT>             */<a name="line.1399"></a>
<FONT color="green">1400</FONT>            public static BufferedImage resize(BufferedImage src, Method scalingMethod,<a name="line.1400"></a>
<FONT color="green">1401</FONT>                            int targetWidth, int targetHeight, BufferedImageOp... ops) {<a name="line.1401"></a>
<FONT color="green">1402</FONT>                    return resize(src, scalingMethod, Mode.AUTOMATIC, targetWidth,<a name="line.1402"></a>
<FONT color="green">1403</FONT>                                    targetHeight, ops);<a name="line.1403"></a>
<FONT color="green">1404</FONT>            }<a name="line.1404"></a>
<FONT color="green">1405</FONT>    <a name="line.1405"></a>
<FONT color="green">1406</FONT>            /**<a name="line.1406"></a>
<FONT color="green">1407</FONT>             * Resize a given image (maintaining its original proportion) to the target<a name="line.1407"></a>
<FONT color="green">1408</FONT>             * width and height (or fitting the image to the given WIDTH or HEIGHT<a name="line.1408"></a>
<FONT color="green">1409</FONT>             * explicitly, depending on the {@link Mode} specified) and apply the given<a name="line.1409"></a>
<FONT color="green">1410</FONT>             * {@link BufferedImageOp}s (if any) to the result before returning it.<a name="line.1410"></a>
<FONT color="green">1411</FONT>             * &lt;p/&gt;<a name="line.1411"></a>
<FONT color="green">1412</FONT>             * A scaling method of {@link Method#AUTOMATIC} is used.<a name="line.1412"></a>
<FONT color="green">1413</FONT>             * &lt;p/&gt;<a name="line.1413"></a>
<FONT color="green">1414</FONT>             * &lt;strong&gt;TIP&lt;/strong&gt;: See the class description to understand how this<a name="line.1414"></a>
<FONT color="green">1415</FONT>             * class handles recalculation of the &lt;code&gt;targetWidth&lt;/code&gt; or<a name="line.1415"></a>
<FONT color="green">1416</FONT>             * &lt;code&gt;targetHeight&lt;/code&gt; depending on the image's orientation in order<a name="line.1416"></a>
<FONT color="green">1417</FONT>             * to maintain the original proportion.<a name="line.1417"></a>
<FONT color="green">1418</FONT>             * &lt;p/&gt;<a name="line.1418"></a>
<FONT color="green">1419</FONT>             * &lt;strong&gt;TIP&lt;/strong&gt;: This operation leaves the original &lt;code&gt;src&lt;/code&gt;<a name="line.1419"></a>
<FONT color="green">1420</FONT>             * image unmodified. If the caller is done with the &lt;code&gt;src&lt;/code&gt; image<a name="line.1420"></a>
<FONT color="green">1421</FONT>             * after getting the result of this operation, remember to call<a name="line.1421"></a>
<FONT color="green">1422</FONT>             * {@link BufferedImage#flush()} on the &lt;code&gt;src&lt;/code&gt; to free up native<a name="line.1422"></a>
<FONT color="green">1423</FONT>             * resources and make it easier for the GC to collect the unused image.<a name="line.1423"></a>
<FONT color="green">1424</FONT>             * <a name="line.1424"></a>
<FONT color="green">1425</FONT>             * @param src<a name="line.1425"></a>
<FONT color="green">1426</FONT>             *            The image that will be scaled.<a name="line.1426"></a>
<FONT color="green">1427</FONT>             * @param resizeMode<a name="line.1427"></a>
<FONT color="green">1428</FONT>             *            Used to indicate how imgscalr should calculate the final<a name="line.1428"></a>
<FONT color="green">1429</FONT>             *            target size for the image, either fitting the image to the<a name="line.1429"></a>
<FONT color="green">1430</FONT>             *            given width ({@link Mode#FIT_TO_WIDTH}) or fitting the image<a name="line.1430"></a>
<FONT color="green">1431</FONT>             *            to the given height ({@link Mode#FIT_TO_HEIGHT}). If<a name="line.1431"></a>
<FONT color="green">1432</FONT>             *            {@link Mode#AUTOMATIC} is passed in, imgscalr will calculate<a name="line.1432"></a>
<FONT color="green">1433</FONT>             *            proportional dimensions for the scaled image based on its<a name="line.1433"></a>
<FONT color="green">1434</FONT>             *            orientation (landscape, square or portrait). Unless you have<a name="line.1434"></a>
<FONT color="green">1435</FONT>             *            very specific size requirements, most of the time you just<a name="line.1435"></a>
<FONT color="green">1436</FONT>             *            want to use {@link Mode#AUTOMATIC} to "do the right thing".<a name="line.1436"></a>
<FONT color="green">1437</FONT>             * @param targetWidth<a name="line.1437"></a>
<FONT color="green">1438</FONT>             *            The target width that you wish the image to have.<a name="line.1438"></a>
<FONT color="green">1439</FONT>             * @param targetHeight<a name="line.1439"></a>
<FONT color="green">1440</FONT>             *            The target height that you wish the image to have.<a name="line.1440"></a>
<FONT color="green">1441</FONT>             * @param ops<a name="line.1441"></a>
<FONT color="green">1442</FONT>             *            &lt;code&gt;0&lt;/code&gt; or more optional image operations (e.g.<a name="line.1442"></a>
<FONT color="green">1443</FONT>             *            sharpen, blur, etc.) that can be applied to the final result<a name="line.1443"></a>
<FONT color="green">1444</FONT>             *            before returning the image.<a name="line.1444"></a>
<FONT color="green">1445</FONT>             * <a name="line.1445"></a>
<FONT color="green">1446</FONT>             * @return a new {@link BufferedImage} representing the scaled<a name="line.1446"></a>
<FONT color="green">1447</FONT>             *         &lt;code&gt;src&lt;/code&gt; image.<a name="line.1447"></a>
<FONT color="green">1448</FONT>             * <a name="line.1448"></a>
<FONT color="green">1449</FONT>             * @throws IllegalArgumentException<a name="line.1449"></a>
<FONT color="green">1450</FONT>             *             if &lt;code&gt;src&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt;.<a name="line.1450"></a>
<FONT color="green">1451</FONT>             * @throws IllegalArgumentException<a name="line.1451"></a>
<FONT color="green">1452</FONT>             *             if &lt;code&gt;resizeMode&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt;.<a name="line.1452"></a>
<FONT color="green">1453</FONT>             * @throws IllegalArgumentException<a name="line.1453"></a>
<FONT color="green">1454</FONT>             *             if &lt;code&gt;targetWidth&lt;/code&gt; is &amp;lt; 0 or if<a name="line.1454"></a>
<FONT color="green">1455</FONT>             *             &lt;code&gt;targetHeight&lt;/code&gt; is &amp;lt; 0.<a name="line.1455"></a>
<FONT color="green">1456</FONT>             * @throws ImagingOpException<a name="line.1456"></a>
<FONT color="green">1457</FONT>             *             if one of the given {@link BufferedImageOp}s fails to apply.<a name="line.1457"></a>
<FONT color="green">1458</FONT>             *             These exceptions bubble up from the inside of most of the<a name="line.1458"></a>
<FONT color="green">1459</FONT>             *             {@link BufferedImageOp} implementations and are explicitly<a name="line.1459"></a>
<FONT color="green">1460</FONT>             *             defined on the imgscalr API to make it easier for callers to<a name="line.1460"></a>
<FONT color="green">1461</FONT>             *             catch the exception (if they are passing along optional ops<a name="line.1461"></a>
<FONT color="green">1462</FONT>             *             to be applied). imgscalr takes detailed steps to avoid the<a name="line.1462"></a>
<FONT color="green">1463</FONT>             *             most common pitfalls that will cause {@link BufferedImageOp}s<a name="line.1463"></a>
<FONT color="green">1464</FONT>             *             to fail, even when using straight forward JDK-image<a name="line.1464"></a>
<FONT color="green">1465</FONT>             *             operations.<a name="line.1465"></a>
<FONT color="green">1466</FONT>             * <a name="line.1466"></a>
<FONT color="green">1467</FONT>             * @see Mode<a name="line.1467"></a>
<FONT color="green">1468</FONT>             */<a name="line.1468"></a>
<FONT color="green">1469</FONT>            public static BufferedImage resize(BufferedImage src, Mode resizeMode,<a name="line.1469"></a>
<FONT color="green">1470</FONT>                            int targetWidth, int targetHeight, BufferedImageOp... ops)<a name="line.1470"></a>
<FONT color="green">1471</FONT>                            throws IllegalArgumentException, ImagingOpException {<a name="line.1471"></a>
<FONT color="green">1472</FONT>                    return resize(src, Method.AUTOMATIC, resizeMode, targetWidth,<a name="line.1472"></a>
<FONT color="green">1473</FONT>                                    targetHeight, ops);<a name="line.1473"></a>
<FONT color="green">1474</FONT>            }<a name="line.1474"></a>
<FONT color="green">1475</FONT>    <a name="line.1475"></a>
<FONT color="green">1476</FONT>            /**<a name="line.1476"></a>
<FONT color="green">1477</FONT>             * Resize a given image (maintaining its original proportion) to the target<a name="line.1477"></a>
<FONT color="green">1478</FONT>             * width and height (or fitting the image to the given WIDTH or HEIGHT<a name="line.1478"></a>
<FONT color="green">1479</FONT>             * explicitly, depending on the {@link Mode} specified) using the given<a name="line.1479"></a>
<FONT color="green">1480</FONT>             * scaling method and apply the given {@link BufferedImageOp}s (if any) to<a name="line.1480"></a>
<FONT color="green">1481</FONT>             * the result before returning it.<a name="line.1481"></a>
<FONT color="green">1482</FONT>             * &lt;p/&gt;<a name="line.1482"></a>
<FONT color="green">1483</FONT>             * &lt;strong&gt;TIP&lt;/strong&gt;: See the class description to understand how this<a name="line.1483"></a>
<FONT color="green">1484</FONT>             * class handles recalculation of the &lt;code&gt;targetWidth&lt;/code&gt; or<a name="line.1484"></a>
<FONT color="green">1485</FONT>             * &lt;code&gt;targetHeight&lt;/code&gt; depending on the image's orientation in order<a name="line.1485"></a>
<FONT color="green">1486</FONT>             * to maintain the original proportion.<a name="line.1486"></a>
<FONT color="green">1487</FONT>             * &lt;p/&gt;<a name="line.1487"></a>
<FONT color="green">1488</FONT>             * &lt;strong&gt;TIP&lt;/strong&gt;: This operation leaves the original &lt;code&gt;src&lt;/code&gt;<a name="line.1488"></a>
<FONT color="green">1489</FONT>             * image unmodified. If the caller is done with the &lt;code&gt;src&lt;/code&gt; image<a name="line.1489"></a>
<FONT color="green">1490</FONT>             * after getting the result of this operation, remember to call<a name="line.1490"></a>
<FONT color="green">1491</FONT>             * {@link BufferedImage#flush()} on the &lt;code&gt;src&lt;/code&gt; to free up native<a name="line.1491"></a>
<FONT color="green">1492</FONT>             * resources and make it easier for the GC to collect the unused image.<a name="line.1492"></a>
<FONT color="green">1493</FONT>             * <a name="line.1493"></a>
<FONT color="green">1494</FONT>             * @param src<a name="line.1494"></a>
<FONT color="green">1495</FONT>             *            The image that will be scaled.<a name="line.1495"></a>
<FONT color="green">1496</FONT>             * @param scalingMethod<a name="line.1496"></a>
<FONT color="green">1497</FONT>             *            The method used for scaling the image; preferring speed to<a name="line.1497"></a>
<FONT color="green">1498</FONT>             *            quality or a balance of both.<a name="line.1498"></a>
<FONT color="green">1499</FONT>             * @param resizeMode<a name="line.1499"></a>
<FONT color="green">1500</FONT>             *            Used to indicate how imgscalr should calculate the final<a name="line.1500"></a>
<FONT color="green">1501</FONT>             *            target size for the image, either fitting the image to the<a name="line.1501"></a>
<FONT color="green">1502</FONT>             *            given width ({@link Mode#FIT_TO_WIDTH}) or fitting the image<a name="line.1502"></a>
<FONT color="green">1503</FONT>             *            to the given height ({@link Mode#FIT_TO_HEIGHT}). If<a name="line.1503"></a>
<FONT color="green">1504</FONT>             *            {@link Mode#AUTOMATIC} is passed in, imgscalr will calculate<a name="line.1504"></a>
<FONT color="green">1505</FONT>             *            proportional dimensions for the scaled image based on its<a name="line.1505"></a>
<FONT color="green">1506</FONT>             *            orientation (landscape, square or portrait). Unless you have<a name="line.1506"></a>
<FONT color="green">1507</FONT>             *            very specific size requirements, most of the time you just<a name="line.1507"></a>
<FONT color="green">1508</FONT>             *            want to use {@link Mode#AUTOMATIC} to "do the right thing".<a name="line.1508"></a>
<FONT color="green">1509</FONT>             * @param targetWidth<a name="line.1509"></a>
<FONT color="green">1510</FONT>             *            The target width that you wish the image to have.<a name="line.1510"></a>
<FONT color="green">1511</FONT>             * @param targetHeight<a name="line.1511"></a>
<FONT color="green">1512</FONT>             *            The target height that you wish the image to have.<a name="line.1512"></a>
<FONT color="green">1513</FONT>             * @param ops<a name="line.1513"></a>
<FONT color="green">1514</FONT>             *            &lt;code&gt;0&lt;/code&gt; or more optional image operations (e.g.<a name="line.1514"></a>
<FONT color="green">1515</FONT>             *            sharpen, blur, etc.) that can be applied to the final result<a name="line.1515"></a>
<FONT color="green">1516</FONT>             *            before returning the image.<a name="line.1516"></a>
<FONT color="green">1517</FONT>             * <a name="line.1517"></a>
<FONT color="green">1518</FONT>             * @return a new {@link BufferedImage} representing the scaled<a name="line.1518"></a>
<FONT color="green">1519</FONT>             *         &lt;code&gt;src&lt;/code&gt; image.<a name="line.1519"></a>
<FONT color="green">1520</FONT>             * <a name="line.1520"></a>
<FONT color="green">1521</FONT>             * @throws IllegalArgumentException<a name="line.1521"></a>
<FONT color="green">1522</FONT>             *             if &lt;code&gt;src&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt;.<a name="line.1522"></a>
<FONT color="green">1523</FONT>             * @throws IllegalArgumentException<a name="line.1523"></a>
<FONT color="green">1524</FONT>             *             if &lt;code&gt;scalingMethod&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt;.<a name="line.1524"></a>
<FONT color="green">1525</FONT>             * @throws IllegalArgumentException<a name="line.1525"></a>
<FONT color="green">1526</FONT>             *             if &lt;code&gt;resizeMode&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt;.<a name="line.1526"></a>
<FONT color="green">1527</FONT>             * @throws IllegalArgumentException<a name="line.1527"></a>
<FONT color="green">1528</FONT>             *             if &lt;code&gt;targetWidth&lt;/code&gt; is &amp;lt; 0 or if<a name="line.1528"></a>
<FONT color="green">1529</FONT>             *             &lt;code&gt;targetHeight&lt;/code&gt; is &amp;lt; 0.<a name="line.1529"></a>
<FONT color="green">1530</FONT>             * @throws ImagingOpException<a name="line.1530"></a>
<FONT color="green">1531</FONT>             *             if one of the given {@link BufferedImageOp}s fails to apply.<a name="line.1531"></a>
<FONT color="green">1532</FONT>             *             These exceptions bubble up from the inside of most of the<a name="line.1532"></a>
<FONT color="green">1533</FONT>             *             {@link BufferedImageOp} implementations and are explicitly<a name="line.1533"></a>
<FONT color="green">1534</FONT>             *             defined on the imgscalr API to make it easier for callers to<a name="line.1534"></a>
<FONT color="green">1535</FONT>             *             catch the exception (if they are passing along optional ops<a name="line.1535"></a>
<FONT color="green">1536</FONT>             *             to be applied). imgscalr takes detailed steps to avoid the<a name="line.1536"></a>
<FONT color="green">1537</FONT>             *             most common pitfalls that will cause {@link BufferedImageOp}s<a name="line.1537"></a>
<FONT color="green">1538</FONT>             *             to fail, even when using straight forward JDK-image<a name="line.1538"></a>
<FONT color="green">1539</FONT>             *             operations.<a name="line.1539"></a>
<FONT color="green">1540</FONT>             * <a name="line.1540"></a>
<FONT color="green">1541</FONT>             * @see Method<a name="line.1541"></a>
<FONT color="green">1542</FONT>             * @see Mode<a name="line.1542"></a>
<FONT color="green">1543</FONT>             */<a name="line.1543"></a>
<FONT color="green">1544</FONT>            public static BufferedImage resize(BufferedImage src, Method scalingMethod,<a name="line.1544"></a>
<FONT color="green">1545</FONT>                            Mode resizeMode, int targetWidth, int targetHeight,<a name="line.1545"></a>
<FONT color="green">1546</FONT>                            BufferedImageOp... ops) throws IllegalArgumentException,<a name="line.1546"></a>
<FONT color="green">1547</FONT>                            ImagingOpException {<a name="line.1547"></a>
<FONT color="green">1548</FONT>                    long t = System.currentTimeMillis();<a name="line.1548"></a>
<FONT color="green">1549</FONT>    <a name="line.1549"></a>
<FONT color="green">1550</FONT>                    if (src == null)<a name="line.1550"></a>
<FONT color="green">1551</FONT>                            throw new IllegalArgumentException("src cannot be null");<a name="line.1551"></a>
<FONT color="green">1552</FONT>                    if (targetWidth &lt; 0)<a name="line.1552"></a>
<FONT color="green">1553</FONT>                            throw new IllegalArgumentException("targetWidth must be &gt;= 0");<a name="line.1553"></a>
<FONT color="green">1554</FONT>                    if (targetHeight &lt; 0)<a name="line.1554"></a>
<FONT color="green">1555</FONT>                            throw new IllegalArgumentException("targetHeight must be &gt;= 0");<a name="line.1555"></a>
<FONT color="green">1556</FONT>                    if (scalingMethod == null)<a name="line.1556"></a>
<FONT color="green">1557</FONT>                            throw new IllegalArgumentException(<a name="line.1557"></a>
<FONT color="green">1558</FONT>                                            "scalingMethod cannot be null. A good default value is Method.AUTOMATIC.");<a name="line.1558"></a>
<FONT color="green">1559</FONT>                    if (resizeMode == null)<a name="line.1559"></a>
<FONT color="green">1560</FONT>                            throw new IllegalArgumentException(<a name="line.1560"></a>
<FONT color="green">1561</FONT>                                            "resizeMode cannot be null. A good default value is Mode.AUTOMATIC.");<a name="line.1561"></a>
<FONT color="green">1562</FONT>    <a name="line.1562"></a>
<FONT color="green">1563</FONT>                    BufferedImage result = null;<a name="line.1563"></a>
<FONT color="green">1564</FONT>    <a name="line.1564"></a>
<FONT color="green">1565</FONT>                    int currentWidth = src.getWidth();<a name="line.1565"></a>
<FONT color="green">1566</FONT>                    int currentHeight = src.getHeight();<a name="line.1566"></a>
<FONT color="green">1567</FONT>    <a name="line.1567"></a>
<FONT color="green">1568</FONT>                    // &lt;= 1 is a square or landscape-oriented image, &gt; 1 is a portrait.<a name="line.1568"></a>
<FONT color="green">1569</FONT>                    float ratio = ((float) currentHeight / (float) currentWidth);<a name="line.1569"></a>
<FONT color="green">1570</FONT>    <a name="line.1570"></a>
<FONT color="green">1571</FONT>                    if (DEBUG)<a name="line.1571"></a>
<FONT color="green">1572</FONT>                            log(0,<a name="line.1572"></a>
<FONT color="green">1573</FONT>                                            "Resizing Image [size=%dx%d, resizeMode=%s, orientation=%s, ratio(H/W)=%f] to [targetSize=%dx%d]",<a name="line.1573"></a>
<FONT color="green">1574</FONT>                                            currentWidth, currentHeight, resizeMode,<a name="line.1574"></a>
<FONT color="green">1575</FONT>                                            (ratio &lt;= 1 ? "Landscape/Square" : "Portrait"), ratio,<a name="line.1575"></a>
<FONT color="green">1576</FONT>                                            targetWidth, targetHeight);<a name="line.1576"></a>
<FONT color="green">1577</FONT>    <a name="line.1577"></a>
<FONT color="green">1578</FONT>                    /*<a name="line.1578"></a>
<FONT color="green">1579</FONT>                     * First determine if ANY size calculation needs to be done, in the case<a name="line.1579"></a>
<FONT color="green">1580</FONT>                     * of FIT_EXACT, ignore image proportions and orientation and just use<a name="line.1580"></a>
<FONT color="green">1581</FONT>                     * what the user sent in, otherwise the proportion of the picture must<a name="line.1581"></a>
<FONT color="green">1582</FONT>                     * be honored.<a name="line.1582"></a>
<FONT color="green">1583</FONT>                     * <a name="line.1583"></a>
<FONT color="green">1584</FONT>                     * The way that is done is to figure out if the image is in a<a name="line.1584"></a>
<FONT color="green">1585</FONT>                     * LANDSCAPE/SQUARE or PORTRAIT orientation and depending on its<a name="line.1585"></a>
<FONT color="green">1586</FONT>                     * orientation, use the primary dimension (width for LANDSCAPE/SQUARE<a name="line.1586"></a>
<FONT color="green">1587</FONT>                     * and height for PORTRAIT) to recalculate the alternative (height and<a name="line.1587"></a>
<FONT color="green">1588</FONT>                     * width respectively) value that adheres to the existing ratio.<a name="line.1588"></a>
<FONT color="green">1589</FONT>                     * <a name="line.1589"></a>
<FONT color="green">1590</FONT>                     * This helps make life easier for the caller as they don't need to<a name="line.1590"></a>
<FONT color="green">1591</FONT>                     * pre-compute proportional dimensions before calling the API, they can<a name="line.1591"></a>
<FONT color="green">1592</FONT>                     * just specify the dimensions they would like the image to roughly fit<a name="line.1592"></a>
<FONT color="green">1593</FONT>                     * within and it will do the right thing without mangling the result.<a name="line.1593"></a>
<FONT color="green">1594</FONT>                     */<a name="line.1594"></a>
<FONT color="green">1595</FONT>                    if (resizeMode != Mode.FIT_EXACT) {<a name="line.1595"></a>
<FONT color="green">1596</FONT>                            if ((ratio &lt;= 1 &amp;&amp; resizeMode == Mode.AUTOMATIC)<a name="line.1596"></a>
<FONT color="green">1597</FONT>                                            || (resizeMode == Mode.FIT_TO_WIDTH)) {<a name="line.1597"></a>
<FONT color="green">1598</FONT>                                    // First make sure we need to do any work in the first place<a name="line.1598"></a>
<FONT color="green">1599</FONT>                                    if (targetWidth == src.getWidth())<a name="line.1599"></a>
<FONT color="green">1600</FONT>                                            return src;<a name="line.1600"></a>
<FONT color="green">1601</FONT>    <a name="line.1601"></a>
<FONT color="green">1602</FONT>                                    // Save for detailed logging (this is cheap).<a name="line.1602"></a>
<FONT color="green">1603</FONT>                                    int originalTargetHeight = targetHeight;<a name="line.1603"></a>
<FONT color="green">1604</FONT>    <a name="line.1604"></a>
<FONT color="green">1605</FONT>                                    /*<a name="line.1605"></a>
<FONT color="green">1606</FONT>                                     * Landscape or Square Orientation: Ignore the given height and<a name="line.1606"></a>
<FONT color="green">1607</FONT>                                     * re-calculate a proportionally correct value based on the<a name="line.1607"></a>
<FONT color="green">1608</FONT>                                     * targetWidth.<a name="line.1608"></a>
<FONT color="green">1609</FONT>                                     */<a name="line.1609"></a>
<FONT color="green">1610</FONT>                                    targetHeight = Math.round((float) targetWidth * ratio);<a name="line.1610"></a>
<FONT color="green">1611</FONT>    <a name="line.1611"></a>
<FONT color="green">1612</FONT>                                    if (DEBUG &amp;&amp; originalTargetHeight != targetHeight)<a name="line.1612"></a>
<FONT color="green">1613</FONT>                                            log(1,<a name="line.1613"></a>
<FONT color="green">1614</FONT>                                                            "Auto-Corrected targetHeight [from=%d to=%d] to honor image proportions.",<a name="line.1614"></a>
<FONT color="green">1615</FONT>                                                            originalTargetHeight, targetHeight);<a name="line.1615"></a>
<FONT color="green">1616</FONT>                            } else {<a name="line.1616"></a>
<FONT color="green">1617</FONT>                                    // First make sure we need to do any work in the first place<a name="line.1617"></a>
<FONT color="green">1618</FONT>                                    if (targetHeight == src.getHeight())<a name="line.1618"></a>
<FONT color="green">1619</FONT>                                            return src;<a name="line.1619"></a>
<FONT color="green">1620</FONT>    <a name="line.1620"></a>
<FONT color="green">1621</FONT>                                    // Save for detailed logging (this is cheap).<a name="line.1621"></a>
<FONT color="green">1622</FONT>                                    int originalTargetWidth = targetWidth;<a name="line.1622"></a>
<FONT color="green">1623</FONT>    <a name="line.1623"></a>
<FONT color="green">1624</FONT>                                    /*<a name="line.1624"></a>
<FONT color="green">1625</FONT>                                     * Portrait Orientation: Ignore the given width and re-calculate<a name="line.1625"></a>
<FONT color="green">1626</FONT>                                     * a proportionally correct value based on the targetHeight.<a name="line.1626"></a>
<FONT color="green">1627</FONT>                                     */<a name="line.1627"></a>
<FONT color="green">1628</FONT>                                    targetWidth = Math.round((float) targetHeight / ratio);<a name="line.1628"></a>
<FONT color="green">1629</FONT>    <a name="line.1629"></a>
<FONT color="green">1630</FONT>                                    if (DEBUG &amp;&amp; originalTargetWidth != targetWidth)<a name="line.1630"></a>
<FONT color="green">1631</FONT>                                            log(1,<a name="line.1631"></a>
<FONT color="green">1632</FONT>                                                            "Auto-Corrected targetWidth [from=%d to=%d] to honor image proportions.",<a name="line.1632"></a>
<FONT color="green">1633</FONT>                                                            originalTargetWidth, targetWidth);<a name="line.1633"></a>
<FONT color="green">1634</FONT>                            }<a name="line.1634"></a>
<FONT color="green">1635</FONT>                    } else {<a name="line.1635"></a>
<FONT color="green">1636</FONT>                            if (DEBUG)<a name="line.1636"></a>
<FONT color="green">1637</FONT>                                    log(1,<a name="line.1637"></a>
<FONT color="green">1638</FONT>                                                    "Resize Mode FIT_EXACT used, no width/height checking or re-calculation will be done.");<a name="line.1638"></a>
<FONT color="green">1639</FONT>                    }<a name="line.1639"></a>
<FONT color="green">1640</FONT>    <a name="line.1640"></a>
<FONT color="green">1641</FONT>                    // If AUTOMATIC was specified, determine the real scaling method.<a name="line.1641"></a>
<FONT color="green">1642</FONT>                    if (scalingMethod == Scalr.Method.AUTOMATIC)<a name="line.1642"></a>
<FONT color="green">1643</FONT>                            scalingMethod = determineScalingMethod(targetWidth, targetHeight,<a name="line.1643"></a>
<FONT color="green">1644</FONT>                                            ratio);<a name="line.1644"></a>
<FONT color="green">1645</FONT>    <a name="line.1645"></a>
<FONT color="green">1646</FONT>                    if (DEBUG)<a name="line.1646"></a>
<FONT color="green">1647</FONT>                            log(1, "Using Scaling Method: %s", scalingMethod);<a name="line.1647"></a>
<FONT color="green">1648</FONT>    <a name="line.1648"></a>
<FONT color="green">1649</FONT>                    // Now we scale the image<a name="line.1649"></a>
<FONT color="green">1650</FONT>                    if (scalingMethod == Scalr.Method.SPEED) {<a name="line.1650"></a>
<FONT color="green">1651</FONT>                            result = scaleImage(src, targetWidth, targetHeight,<a name="line.1651"></a>
<FONT color="green">1652</FONT>                                            RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR);<a name="line.1652"></a>
<FONT color="green">1653</FONT>                    } else if (scalingMethod == Scalr.Method.BALANCED) {<a name="line.1653"></a>
<FONT color="green">1654</FONT>                            result = scaleImage(src, targetWidth, targetHeight,<a name="line.1654"></a>
<FONT color="green">1655</FONT>                                            RenderingHints.VALUE_INTERPOLATION_BILINEAR);<a name="line.1655"></a>
<FONT color="green">1656</FONT>                    } else if (scalingMethod == Scalr.Method.QUALITY) {<a name="line.1656"></a>
<FONT color="green">1657</FONT>                            /*<a name="line.1657"></a>
<FONT color="green">1658</FONT>                             * If we are scaling up (in either width or height - since we know<a name="line.1658"></a>
<FONT color="green">1659</FONT>                             * the image will stay proportional we just check if either are<a name="line.1659"></a>
<FONT color="green">1660</FONT>                             * being scaled up), directly using a single BICUBIC will give us<a name="line.1660"></a>
<FONT color="green">1661</FONT>                             * better results then using Chris Campbell's incremental scaling<a name="line.1661"></a>
<FONT color="green">1662</FONT>                             * operation (and take a lot less time).<a name="line.1662"></a>
<FONT color="green">1663</FONT>                             * <a name="line.1663"></a>
<FONT color="green">1664</FONT>                             * If we are scaling down, we must use the incremental scaling<a name="line.1664"></a>
<FONT color="green">1665</FONT>                             * algorithm for the best result.<a name="line.1665"></a>
<FONT color="green">1666</FONT>                             */<a name="line.1666"></a>
<FONT color="green">1667</FONT>                            if (targetWidth &gt; currentWidth || targetHeight &gt; currentHeight) {<a name="line.1667"></a>
<FONT color="green">1668</FONT>                                    if (DEBUG)<a name="line.1668"></a>
<FONT color="green">1669</FONT>                                            log(1,<a name="line.1669"></a>
<FONT color="green">1670</FONT>                                                            "QUALITY scale-up, a single BICUBIC scale operation will be used...");<a name="line.1670"></a>
<FONT color="green">1671</FONT>    <a name="line.1671"></a>
<FONT color="green">1672</FONT>                                    /*<a name="line.1672"></a>
<FONT color="green">1673</FONT>                                     * BILINEAR and BICUBIC look similar the smaller the scale jump<a name="line.1673"></a>
<FONT color="green">1674</FONT>                                     * upwards is, if the scale is larger BICUBIC looks sharper and<a name="line.1674"></a>
<FONT color="green">1675</FONT>                                     * less fuzzy. But most importantly we have to use BICUBIC to<a name="line.1675"></a>
<FONT color="green">1676</FONT>                                     * match the contract of the QUALITY rendering scalingMethod.<a name="line.1676"></a>
<FONT color="green">1677</FONT>                                     * This note is just here for anyone reading the code and<a name="line.1677"></a>
<FONT color="green">1678</FONT>                                     * wondering how they can speed their own calls up.<a name="line.1678"></a>
<FONT color="green">1679</FONT>                                     */<a name="line.1679"></a>
<FONT color="green">1680</FONT>                                    result = scaleImage(src, targetWidth, targetHeight,<a name="line.1680"></a>
<FONT color="green">1681</FONT>                                                    RenderingHints.VALUE_INTERPOLATION_BICUBIC);<a name="line.1681"></a>
<FONT color="green">1682</FONT>                            } else {<a name="line.1682"></a>
<FONT color="green">1683</FONT>                                    if (DEBUG)<a name="line.1683"></a>
<FONT color="green">1684</FONT>                                            log(1,<a name="line.1684"></a>
<FONT color="green">1685</FONT>                                                            "QUALITY scale-down, incremental scaling will be used...");<a name="line.1685"></a>
<FONT color="green">1686</FONT>    <a name="line.1686"></a>
<FONT color="green">1687</FONT>                                    /*<a name="line.1687"></a>
<FONT color="green">1688</FONT>                                     * Originally we wanted to use BILINEAR interpolation here<a name="line.1688"></a>
<FONT color="green">1689</FONT>                                     * because it takes 1/3rd the time that the BICUBIC<a name="line.1689"></a>
<FONT color="green">1690</FONT>                                     * interpolation does, however, when scaling large images down<a name="line.1690"></a>
<FONT color="green">1691</FONT>                                     * to most sizes bigger than a thumbnail we witnessed noticeable<a name="line.1691"></a>
<FONT color="green">1692</FONT>                                     * "softening" in the resultant image with BILINEAR that would<a name="line.1692"></a>
<FONT color="green">1693</FONT>                                     * be unexpectedly annoying to a user expecting a "QUALITY"<a name="line.1693"></a>
<FONT color="green">1694</FONT>                                     * scale of their original image. Instead BICUBIC was chosen to<a name="line.1694"></a>
<FONT color="green">1695</FONT>                                     * honor the contract of a QUALITY scale of the original image.<a name="line.1695"></a>
<FONT color="green">1696</FONT>                                     */<a name="line.1696"></a>
<FONT color="green">1697</FONT>                                    result = scaleImageIncrementally(src, targetWidth,<a name="line.1697"></a>
<FONT color="green">1698</FONT>                                                    targetHeight,<a name="line.1698"></a>
<FONT color="green">1699</FONT>                                                    RenderingHints.VALUE_INTERPOLATION_BICUBIC);<a name="line.1699"></a>
<FONT color="green">1700</FONT>                            }<a name="line.1700"></a>
<FONT color="green">1701</FONT>                    }<a name="line.1701"></a>
<FONT color="green">1702</FONT>    <a name="line.1702"></a>
<FONT color="green">1703</FONT>                    if (DEBUG)<a name="line.1703"></a>
<FONT color="green">1704</FONT>                            log(0, "Resized Image in %d ms", System.currentTimeMillis() - t);<a name="line.1704"></a>
<FONT color="green">1705</FONT>    <a name="line.1705"></a>
<FONT color="green">1706</FONT>                    // Apply any optional operations (if specified).<a name="line.1706"></a>
<FONT color="green">1707</FONT>                    if (ops != null &amp;&amp; ops.length &gt; 0)<a name="line.1707"></a>
<FONT color="green">1708</FONT>                            result = apply(result, ops);<a name="line.1708"></a>
<FONT color="green">1709</FONT>    <a name="line.1709"></a>
<FONT color="green">1710</FONT>                    return result;<a name="line.1710"></a>
<FONT color="green">1711</FONT>            }<a name="line.1711"></a>
<FONT color="green">1712</FONT>    <a name="line.1712"></a>
<FONT color="green">1713</FONT>            /**<a name="line.1713"></a>
<FONT color="green">1714</FONT>             * Used to apply a {@link Rotation} and then &lt;code&gt;0&lt;/code&gt; or more<a name="line.1714"></a>
<FONT color="green">1715</FONT>             * {@link BufferedImageOp}s to a given image and return the result.<a name="line.1715"></a>
<FONT color="green">1716</FONT>             * &lt;p/&gt;<a name="line.1716"></a>
<FONT color="green">1717</FONT>             * &lt;strong&gt;TIP&lt;/strong&gt;: This operation leaves the original &lt;code&gt;src&lt;/code&gt;<a name="line.1717"></a>
<FONT color="green">1718</FONT>             * image unmodified. If the caller is done with the &lt;code&gt;src&lt;/code&gt; image<a name="line.1718"></a>
<FONT color="green">1719</FONT>             * after getting the result of this operation, remember to call<a name="line.1719"></a>
<FONT color="green">1720</FONT>             * {@link BufferedImage#flush()} on the &lt;code&gt;src&lt;/code&gt; to free up native<a name="line.1720"></a>
<FONT color="green">1721</FONT>             * resources and make it easier for the GC to collect the unused image.<a name="line.1721"></a>
<FONT color="green">1722</FONT>             * <a name="line.1722"></a>
<FONT color="green">1723</FONT>             * @param src<a name="line.1723"></a>
<FONT color="green">1724</FONT>             *            The image that will have the rotation applied to it.<a name="line.1724"></a>
<FONT color="green">1725</FONT>             * @param rotation<a name="line.1725"></a>
<FONT color="green">1726</FONT>             *            The rotation that will be applied to the image.<a name="line.1726"></a>
<FONT color="green">1727</FONT>             * @param ops<a name="line.1727"></a>
<FONT color="green">1728</FONT>             *            Zero or more optional image operations (e.g. sharpen, blur,<a name="line.1728"></a>
<FONT color="green">1729</FONT>             *            etc.) that can be applied to the final result before returning<a name="line.1729"></a>
<FONT color="green">1730</FONT>             *            the image.<a name="line.1730"></a>
<FONT color="green">1731</FONT>             * <a name="line.1731"></a>
<FONT color="green">1732</FONT>             * @return a new {@link BufferedImage} representing &lt;code&gt;src&lt;/code&gt; rotated<a name="line.1732"></a>
<FONT color="green">1733</FONT>             *         by the given amount and any optional ops applied to it.<a name="line.1733"></a>
<FONT color="green">1734</FONT>             * <a name="line.1734"></a>
<FONT color="green">1735</FONT>             * @throws IllegalArgumentException<a name="line.1735"></a>
<FONT color="green">1736</FONT>             *             if &lt;code&gt;src&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt;.<a name="line.1736"></a>
<FONT color="green">1737</FONT>             * @throws IllegalArgumentException<a name="line.1737"></a>
<FONT color="green">1738</FONT>             *             if &lt;code&gt;rotation&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt;.<a name="line.1738"></a>
<FONT color="green">1739</FONT>             * @throws ImagingOpException<a name="line.1739"></a>
<FONT color="green">1740</FONT>             *             if one of the given {@link BufferedImageOp}s fails to apply.<a name="line.1740"></a>
<FONT color="green">1741</FONT>             *             These exceptions bubble up from the inside of most of the<a name="line.1741"></a>
<FONT color="green">1742</FONT>             *             {@link BufferedImageOp} implementations and are explicitly<a name="line.1742"></a>
<FONT color="green">1743</FONT>             *             defined on the imgscalr API to make it easier for callers to<a name="line.1743"></a>
<FONT color="green">1744</FONT>             *             catch the exception (if they are passing along optional ops<a name="line.1744"></a>
<FONT color="green">1745</FONT>             *             to be applied). imgscalr takes detailed steps to avoid the<a name="line.1745"></a>
<FONT color="green">1746</FONT>             *             most common pitfalls that will cause {@link BufferedImageOp}s<a name="line.1746"></a>
<FONT color="green">1747</FONT>             *             to fail, even when using straight forward JDK-image<a name="line.1747"></a>
<FONT color="green">1748</FONT>             *             operations.<a name="line.1748"></a>
<FONT color="green">1749</FONT>             * <a name="line.1749"></a>
<FONT color="green">1750</FONT>             * @see Rotation<a name="line.1750"></a>
<FONT color="green">1751</FONT>             */<a name="line.1751"></a>
<FONT color="green">1752</FONT>            public static BufferedImage rotate(BufferedImage src, Rotation rotation,<a name="line.1752"></a>
<FONT color="green">1753</FONT>                            BufferedImageOp... ops) throws IllegalArgumentException,<a name="line.1753"></a>
<FONT color="green">1754</FONT>                            ImagingOpException {<a name="line.1754"></a>
<FONT color="green">1755</FONT>                    long t = System.currentTimeMillis();<a name="line.1755"></a>
<FONT color="green">1756</FONT>    <a name="line.1756"></a>
<FONT color="green">1757</FONT>                    if (src == null)<a name="line.1757"></a>
<FONT color="green">1758</FONT>                            throw new IllegalArgumentException("src cannot be null");<a name="line.1758"></a>
<FONT color="green">1759</FONT>                    if (rotation == null)<a name="line.1759"></a>
<FONT color="green">1760</FONT>                            throw new IllegalArgumentException("rotation cannot be null");<a name="line.1760"></a>
<FONT color="green">1761</FONT>    <a name="line.1761"></a>
<FONT color="green">1762</FONT>                    if (DEBUG)<a name="line.1762"></a>
<FONT color="green">1763</FONT>                            log(0, "Rotating Image [%s]...", rotation);<a name="line.1763"></a>
<FONT color="green">1764</FONT>    <a name="line.1764"></a>
<FONT color="green">1765</FONT>                    /*<a name="line.1765"></a>
<FONT color="green">1766</FONT>                     * Setup the default width/height values from our image.<a name="line.1766"></a>
<FONT color="green">1767</FONT>                     * <a name="line.1767"></a>
<FONT color="green">1768</FONT>                     * In the case of a 90 or 270 (-90) degree rotation, these two values<a name="line.1768"></a>
<FONT color="green">1769</FONT>                     * flip-flop and we will correct those cases down below in the switch<a name="line.1769"></a>
<FONT color="green">1770</FONT>                     * statement.<a name="line.1770"></a>
<FONT color="green">1771</FONT>                     */<a name="line.1771"></a>
<FONT color="green">1772</FONT>                    int newWidth = src.getWidth();<a name="line.1772"></a>
<FONT color="green">1773</FONT>                    int newHeight = src.getHeight();<a name="line.1773"></a>
<FONT color="green">1774</FONT>    <a name="line.1774"></a>
<FONT color="green">1775</FONT>                    /*<a name="line.1775"></a>
<FONT color="green">1776</FONT>                     * We create a transform per operation request as (oddly enough) it ends<a name="line.1776"></a>
<FONT color="green">1777</FONT>                     * up being faster for the VM to create, use and destroy these instances<a name="line.1777"></a>
<FONT color="green">1778</FONT>                     * than it is to re-use a single AffineTransform per-thread via the<a name="line.1778"></a>
<FONT color="green">1779</FONT>                     * AffineTransform.setTo(...) methods which was my first choice (less<a name="line.1779"></a>
<FONT color="green">1780</FONT>                     * object creation); after benchmarking this explicit case and looking<a name="line.1780"></a>
<FONT color="green">1781</FONT>                     * at just how much code gets run inside of setTo() I opted for a new AT<a name="line.1781"></a>
<FONT color="green">1782</FONT>                     * for every rotation.<a name="line.1782"></a>
<FONT color="green">1783</FONT>                     * <a name="line.1783"></a>
<FONT color="green">1784</FONT>                     * Besides the performance win, trying to safely reuse AffineTransforms<a name="line.1784"></a>
<FONT color="green">1785</FONT>                     * via setTo(...) would have required ThreadLocal instances to avoid<a name="line.1785"></a>
<FONT color="green">1786</FONT>                     * race conditions where two or more resize threads are manipulating the<a name="line.1786"></a>
<FONT color="green">1787</FONT>                     * same transform before applying it.<a name="line.1787"></a>
<FONT color="green">1788</FONT>                     * <a name="line.1788"></a>
<FONT color="green">1789</FONT>                     * Misusing ThreadLocals are one of the #1 reasons for memory leaks in<a name="line.1789"></a>
<FONT color="green">1790</FONT>                     * server applications and since we have no nice way to hook into the<a name="line.1790"></a>
<FONT color="green">1791</FONT>                     * init/destroy Servlet cycle or any other initialization cycle for this<a name="line.1791"></a>
<FONT color="green">1792</FONT>                     * library to automatically call ThreadLocal.remove() to avoid the<a name="line.1792"></a>
<FONT color="green">1793</FONT>                     * memory leak, it would have made using this library *safely* on the<a name="line.1793"></a>
<FONT color="green">1794</FONT>                     * server side much harder.<a name="line.1794"></a>
<FONT color="green">1795</FONT>                     * <a name="line.1795"></a>
<FONT color="green">1796</FONT>                     * So we opt for creating individual transforms per rotation op and let<a name="line.1796"></a>
<FONT color="green">1797</FONT>                     * the VM clean them up in a GC. I only clarify all this reasoning here<a name="line.1797"></a>
<FONT color="green">1798</FONT>                     * for anyone else reading this code and being tempted to reuse the AT<a name="line.1798"></a>
<FONT color="green">1799</FONT>                     * instances of performance gains; there aren't any AND you get a lot of<a name="line.1799"></a>
<FONT color="green">1800</FONT>                     * pain along with it.<a name="line.1800"></a>
<FONT color="green">1801</FONT>                     */<a name="line.1801"></a>
<FONT color="green">1802</FONT>                    AffineTransform tx = new AffineTransform();<a name="line.1802"></a>
<FONT color="green">1803</FONT>    <a name="line.1803"></a>
<FONT color="green">1804</FONT>                    switch (rotation) {<a name="line.1804"></a>
<FONT color="green">1805</FONT>                    case CW_90:<a name="line.1805"></a>
<FONT color="green">1806</FONT>                            /*<a name="line.1806"></a>
<FONT color="green">1807</FONT>                             * A 90 or -90 degree rotation will cause the height and width to<a name="line.1807"></a>
<FONT color="green">1808</FONT>                             * flip-flop from the original image to the rotated one.<a name="line.1808"></a>
<FONT color="green">1809</FONT>                             */<a name="line.1809"></a>
<FONT color="green">1810</FONT>                            newWidth = src.getHeight();<a name="line.1810"></a>
<FONT color="green">1811</FONT>                            newHeight = src.getWidth();<a name="line.1811"></a>
<FONT color="green">1812</FONT>    <a name="line.1812"></a>
<FONT color="green">1813</FONT>                            // Reminder: newWidth == result.getHeight() at this point<a name="line.1813"></a>
<FONT color="green">1814</FONT>                            tx.translate(newWidth, 0);<a name="line.1814"></a>
<FONT color="green">1815</FONT>                            tx.rotate(Math.toRadians(90));<a name="line.1815"></a>
<FONT color="green">1816</FONT>    <a name="line.1816"></a>
<FONT color="green">1817</FONT>                            break;<a name="line.1817"></a>
<FONT color="green">1818</FONT>    <a name="line.1818"></a>
<FONT color="green">1819</FONT>                    case CW_270:<a name="line.1819"></a>
<FONT color="green">1820</FONT>                            /*<a name="line.1820"></a>
<FONT color="green">1821</FONT>                             * A 90 or -90 degree rotation will cause the height and width to<a name="line.1821"></a>
<FONT color="green">1822</FONT>                             * flip-flop from the original image to the rotated one.<a name="line.1822"></a>
<FONT color="green">1823</FONT>                             */<a name="line.1823"></a>
<FONT color="green">1824</FONT>                            newWidth = src.getHeight();<a name="line.1824"></a>
<FONT color="green">1825</FONT>                            newHeight = src.getWidth();<a name="line.1825"></a>
<FONT color="green">1826</FONT>    <a name="line.1826"></a>
<FONT color="green">1827</FONT>                            // Reminder: newHeight == result.getWidth() at this point<a name="line.1827"></a>
<FONT color="green">1828</FONT>                            tx.translate(0, newHeight);<a name="line.1828"></a>
<FONT color="green">1829</FONT>                            tx.rotate(Math.toRadians(-90));<a name="line.1829"></a>
<FONT color="green">1830</FONT>                            break;<a name="line.1830"></a>
<FONT color="green">1831</FONT>    <a name="line.1831"></a>
<FONT color="green">1832</FONT>                    case CW_180:<a name="line.1832"></a>
<FONT color="green">1833</FONT>                            tx.translate(newWidth, newHeight);<a name="line.1833"></a>
<FONT color="green">1834</FONT>                            tx.rotate(Math.toRadians(180));<a name="line.1834"></a>
<FONT color="green">1835</FONT>                            break;<a name="line.1835"></a>
<FONT color="green">1836</FONT>    <a name="line.1836"></a>
<FONT color="green">1837</FONT>                    case FLIP_HORZ:<a name="line.1837"></a>
<FONT color="green">1838</FONT>                            tx.translate(newWidth, 0);<a name="line.1838"></a>
<FONT color="green">1839</FONT>                            tx.scale(-1.0, 1.0);<a name="line.1839"></a>
<FONT color="green">1840</FONT>                            break;<a name="line.1840"></a>
<FONT color="green">1841</FONT>    <a name="line.1841"></a>
<FONT color="green">1842</FONT>                    case FLIP_VERT:<a name="line.1842"></a>
<FONT color="green">1843</FONT>                            tx.translate(0, newHeight);<a name="line.1843"></a>
<FONT color="green">1844</FONT>                            tx.scale(1.0, -1.0);<a name="line.1844"></a>
<FONT color="green">1845</FONT>                            break;<a name="line.1845"></a>
<FONT color="green">1846</FONT>                    }<a name="line.1846"></a>
<FONT color="green">1847</FONT>    <a name="line.1847"></a>
<FONT color="green">1848</FONT>                    // Create our target image we will render the rotated result to.<a name="line.1848"></a>
<FONT color="green">1849</FONT>                    BufferedImage result = createOptimalImage(src, newWidth, newHeight);<a name="line.1849"></a>
<FONT color="green">1850</FONT>                    Graphics2D g2d = (Graphics2D) result.createGraphics();<a name="line.1850"></a>
<FONT color="green">1851</FONT>    <a name="line.1851"></a>
<FONT color="green">1852</FONT>                    /*<a name="line.1852"></a>
<FONT color="green">1853</FONT>                     * Render the resultant image to our new rotatedImage buffer, applying<a name="line.1853"></a>
<FONT color="green">1854</FONT>                     * the AffineTransform that we calculated above during rendering so the<a name="line.1854"></a>
<FONT color="green">1855</FONT>                     * pixels from the old position are transposed to the new positions in<a name="line.1855"></a>
<FONT color="green">1856</FONT>                     * the resulting image correctly.<a name="line.1856"></a>
<FONT color="green">1857</FONT>                     */<a name="line.1857"></a>
<FONT color="green">1858</FONT>                    g2d.drawImage(src, tx, null);<a name="line.1858"></a>
<FONT color="green">1859</FONT>                    g2d.dispose();<a name="line.1859"></a>
<FONT color="green">1860</FONT>    <a name="line.1860"></a>
<FONT color="green">1861</FONT>                    if (DEBUG)<a name="line.1861"></a>
<FONT color="green">1862</FONT>                            log(0, "Rotation Applied in %d ms, result [width=%d, height=%d]",<a name="line.1862"></a>
<FONT color="green">1863</FONT>                                            System.currentTimeMillis() - t, result.getWidth(),<a name="line.1863"></a>
<FONT color="green">1864</FONT>                                            result.getHeight());<a name="line.1864"></a>
<FONT color="green">1865</FONT>    <a name="line.1865"></a>
<FONT color="green">1866</FONT>                    // Apply any optional operations (if specified).<a name="line.1866"></a>
<FONT color="green">1867</FONT>                    if (ops != null &amp;&amp; ops.length &gt; 0)<a name="line.1867"></a>
<FONT color="green">1868</FONT>                            result = apply(result, ops);<a name="line.1868"></a>
<FONT color="green">1869</FONT>    <a name="line.1869"></a>
<FONT color="green">1870</FONT>                    return result;<a name="line.1870"></a>
<FONT color="green">1871</FONT>            }<a name="line.1871"></a>
<FONT color="green">1872</FONT>    <a name="line.1872"></a>
<FONT color="green">1873</FONT>            /**<a name="line.1873"></a>
<FONT color="green">1874</FONT>             * Used to write out a useful and well-formatted log message by any piece of<a name="line.1874"></a>
<FONT color="green">1875</FONT>             * code inside of the imgscalr library.<a name="line.1875"></a>
<FONT color="green">1876</FONT>             * &lt;p/&gt;<a name="line.1876"></a>
<FONT color="green">1877</FONT>             * If a message cannot be logged (logging is disabled) then this method<a name="line.1877"></a>
<FONT color="green">1878</FONT>             * returns immediately.<a name="line.1878"></a>
<FONT color="green">1879</FONT>             * &lt;p/&gt;<a name="line.1879"></a>
<FONT color="green">1880</FONT>             * &lt;strong&gt;NOTE&lt;/strong&gt;: Because Java will auto-box primitive arguments<a name="line.1880"></a>
<FONT color="green">1881</FONT>             * into Objects when building out the &lt;code&gt;params&lt;/code&gt; array, care should<a name="line.1881"></a>
<FONT color="green">1882</FONT>             * be taken not to call this method with primitive values unless<a name="line.1882"></a>
<FONT color="green">1883</FONT>             * {@link Scalr#DEBUG} is &lt;code&gt;true&lt;/code&gt;; otherwise the VM will be<a name="line.1883"></a>
<FONT color="green">1884</FONT>             * spending time performing unnecessary auto-boxing calculations.<a name="line.1884"></a>
<FONT color="green">1885</FONT>             * <a name="line.1885"></a>
<FONT color="green">1886</FONT>             * @param depth<a name="line.1886"></a>
<FONT color="green">1887</FONT>             *            The indentation level of the log message.<a name="line.1887"></a>
<FONT color="green">1888</FONT>             * @param message<a name="line.1888"></a>
<FONT color="green">1889</FONT>             *            The log message in &lt;a href=<a name="line.1889"></a>
<FONT color="green">1890</FONT>             *            "http://download.oracle.com/javase/6/docs/api/java/util/Formatter.html#syntax"<a name="line.1890"></a>
<FONT color="green">1891</FONT>             *            &gt;format string syntax&lt;/a&gt; that will be logged.<a name="line.1891"></a>
<FONT color="green">1892</FONT>             * @param params<a name="line.1892"></a>
<FONT color="green">1893</FONT>             *            The parameters that will be swapped into all the place holders<a name="line.1893"></a>
<FONT color="green">1894</FONT>             *            in the original messages before being logged.<a name="line.1894"></a>
<FONT color="green">1895</FONT>             * <a name="line.1895"></a>
<FONT color="green">1896</FONT>             * @see Scalr#LOG_PREFIX<a name="line.1896"></a>
<FONT color="green">1897</FONT>             * @see Scalr#LOG_PREFIX_PROPERTY_NAME<a name="line.1897"></a>
<FONT color="green">1898</FONT>             */<a name="line.1898"></a>
<FONT color="green">1899</FONT>            protected static void log(int depth, String message, Object... params) {<a name="line.1899"></a>
<FONT color="green">1900</FONT>                    if (Scalr.DEBUG) {<a name="line.1900"></a>
<FONT color="green">1901</FONT>                            System.out.print(Scalr.LOG_PREFIX);<a name="line.1901"></a>
<FONT color="green">1902</FONT>    <a name="line.1902"></a>
<FONT color="green">1903</FONT>                            for (int i = 0; i &lt; depth; i++)<a name="line.1903"></a>
<FONT color="green">1904</FONT>                                    System.out.print("\t");<a name="line.1904"></a>
<FONT color="green">1905</FONT>    <a name="line.1905"></a>
<FONT color="green">1906</FONT>                            System.out.printf(message, params);<a name="line.1906"></a>
<FONT color="green">1907</FONT>                            System.out.println();<a name="line.1907"></a>
<FONT color="green">1908</FONT>                    }<a name="line.1908"></a>
<FONT color="green">1909</FONT>            }<a name="line.1909"></a>
<FONT color="green">1910</FONT>    <a name="line.1910"></a>
<FONT color="green">1911</FONT>            /**<a name="line.1911"></a>
<FONT color="green">1912</FONT>             * Used to create a {@link BufferedImage} with the most optimal RGB TYPE (<a name="line.1912"></a>
<FONT color="green">1913</FONT>             * {@link BufferedImage#TYPE_INT_RGB} or {@link BufferedImage#TYPE_INT_ARGB}<a name="line.1913"></a>
<FONT color="green">1914</FONT>             * ) capable of being rendered into from the given &lt;code&gt;src&lt;/code&gt;. The<a name="line.1914"></a>
<FONT color="green">1915</FONT>             * width and height of both images will be identical.<a name="line.1915"></a>
<FONT color="green">1916</FONT>             * &lt;p/&gt;<a name="line.1916"></a>
<FONT color="green">1917</FONT>             * This does not perform a copy of the image data from &lt;code&gt;src&lt;/code&gt; into<a name="line.1917"></a>
<FONT color="green">1918</FONT>             * the result image; see {@link #copyToOptimalImage(BufferedImage)} for<a name="line.1918"></a>
<FONT color="green">1919</FONT>             * that.<a name="line.1919"></a>
<FONT color="green">1920</FONT>             * &lt;p/&gt;<a name="line.1920"></a>
<FONT color="green">1921</FONT>             * We force all rendering results into one of these two types, avoiding the<a name="line.1921"></a>
<FONT color="green">1922</FONT>             * case where a source image is of an unsupported (or poorly supported)<a name="line.1922"></a>
<FONT color="green">1923</FONT>             * format by Java2D causing the rendering result to end up looking terrible<a name="line.1923"></a>
<FONT color="green">1924</FONT>             * (common with GIFs) or be totally corrupt (e.g. solid black image).<a name="line.1924"></a>
<FONT color="green">1925</FONT>             * &lt;p/&gt;<a name="line.1925"></a>
<FONT color="green">1926</FONT>             * Originally reported by Magnus Kvalheim from Movellas when scaling certain<a name="line.1926"></a>
<FONT color="green">1927</FONT>             * GIF and PNG images.<a name="line.1927"></a>
<FONT color="green">1928</FONT>             * <a name="line.1928"></a>
<FONT color="green">1929</FONT>             * @param src<a name="line.1929"></a>
<FONT color="green">1930</FONT>             *            The source image that will be analyzed to determine the most<a name="line.1930"></a>
<FONT color="green">1931</FONT>             *            optimal image type it can be rendered into.<a name="line.1931"></a>
<FONT color="green">1932</FONT>             * <a name="line.1932"></a>
<FONT color="green">1933</FONT>             * @return a new {@link BufferedImage} representing the most optimal target<a name="line.1933"></a>
<FONT color="green">1934</FONT>             *         image type that &lt;code&gt;src&lt;/code&gt; can be rendered into.<a name="line.1934"></a>
<FONT color="green">1935</FONT>             * <a name="line.1935"></a>
<FONT color="green">1936</FONT>             * @see &lt;a<a name="line.1936"></a>
<FONT color="green">1937</FONT>             *      href="http://www.mail-archive.com/java2d-interest@capra.eng.sun.com/msg05621.html"&gt;How<a name="line.1937"></a>
<FONT color="green">1938</FONT>             *      Java2D handles poorly supported image types&lt;/a&gt;<a name="line.1938"></a>
<FONT color="green">1939</FONT>             * @see &lt;a<a name="line.1939"></a>
<FONT color="green">1940</FONT>             *      href="http://code.google.com/p/java-image-scaling/source/browse/trunk/src/main/java/com/mortennobel/imagescaling/MultiStepRescaleOp.java"&gt;Thanks<a name="line.1940"></a>
<FONT color="green">1941</FONT>             *      to Morten Nobel for implementation hint&lt;/a&gt;<a name="line.1941"></a>
<FONT color="green">1942</FONT>             */<a name="line.1942"></a>
<FONT color="green">1943</FONT>            protected static BufferedImage createOptimalImage(BufferedImage src) {<a name="line.1943"></a>
<FONT color="green">1944</FONT>                    return createOptimalImage(src, src.getWidth(), src.getHeight());<a name="line.1944"></a>
<FONT color="green">1945</FONT>            }<a name="line.1945"></a>
<FONT color="green">1946</FONT>    <a name="line.1946"></a>
<FONT color="green">1947</FONT>            /**<a name="line.1947"></a>
<FONT color="green">1948</FONT>             * Used to create a {@link BufferedImage} with the given dimensions and the<a name="line.1948"></a>
<FONT color="green">1949</FONT>             * most optimal RGB TYPE ( {@link BufferedImage#TYPE_INT_RGB} or<a name="line.1949"></a>
<FONT color="green">1950</FONT>             * {@link BufferedImage#TYPE_INT_ARGB} ) capable of being rendered into from<a name="line.1950"></a>
<FONT color="green">1951</FONT>             * the given &lt;code&gt;src&lt;/code&gt;.<a name="line.1951"></a>
<FONT color="green">1952</FONT>             * &lt;p/&gt;<a name="line.1952"></a>
<FONT color="green">1953</FONT>             * This does not perform a copy of the image data from &lt;code&gt;src&lt;/code&gt; into<a name="line.1953"></a>
<FONT color="green">1954</FONT>             * the result image; see {@link #copyToOptimalImage(BufferedImage)} for<a name="line.1954"></a>
<FONT color="green">1955</FONT>             * that.<a name="line.1955"></a>
<FONT color="green">1956</FONT>             * &lt;p/&gt;<a name="line.1956"></a>
<FONT color="green">1957</FONT>             * We force all rendering results into one of these two types, avoiding the<a name="line.1957"></a>
<FONT color="green">1958</FONT>             * case where a source image is of an unsupported (or poorly supported)<a name="line.1958"></a>
<FONT color="green">1959</FONT>             * format by Java2D causing the rendering result to end up looking terrible<a name="line.1959"></a>
<FONT color="green">1960</FONT>             * (common with GIFs) or be totally corrupt (e.g. solid black image).<a name="line.1960"></a>
<FONT color="green">1961</FONT>             * &lt;p/&gt;<a name="line.1961"></a>
<FONT color="green">1962</FONT>             * Originally reported by Magnus Kvalheim from Movellas when scaling certain<a name="line.1962"></a>
<FONT color="green">1963</FONT>             * GIF and PNG images.<a name="line.1963"></a>
<FONT color="green">1964</FONT>             * <a name="line.1964"></a>
<FONT color="green">1965</FONT>             * @param src<a name="line.1965"></a>
<FONT color="green">1966</FONT>             *            The source image that will be analyzed to determine the most<a name="line.1966"></a>
<FONT color="green">1967</FONT>             *            optimal image type it can be rendered into.<a name="line.1967"></a>
<FONT color="green">1968</FONT>             * @param width<a name="line.1968"></a>
<FONT color="green">1969</FONT>             *            The width of the newly created resulting image.<a name="line.1969"></a>
<FONT color="green">1970</FONT>             * @param height<a name="line.1970"></a>
<FONT color="green">1971</FONT>             *            The height of the newly created resulting image.<a name="line.1971"></a>
<FONT color="green">1972</FONT>             * <a name="line.1972"></a>
<FONT color="green">1973</FONT>             * @return a new {@link BufferedImage} representing the most optimal target<a name="line.1973"></a>
<FONT color="green">1974</FONT>             *         image type that &lt;code&gt;src&lt;/code&gt; can be rendered into.<a name="line.1974"></a>
<FONT color="green">1975</FONT>             * <a name="line.1975"></a>
<FONT color="green">1976</FONT>             * @throws IllegalArgumentException<a name="line.1976"></a>
<FONT color="green">1977</FONT>             *             if &lt;code&gt;width&lt;/code&gt; or &lt;code&gt;height&lt;/code&gt; are &amp;lt; 0.<a name="line.1977"></a>
<FONT color="green">1978</FONT>             * <a name="line.1978"></a>
<FONT color="green">1979</FONT>             * @see &lt;a<a name="line.1979"></a>
<FONT color="green">1980</FONT>             *      href="http://www.mail-archive.com/java2d-interest@capra.eng.sun.com/msg05621.html"&gt;How<a name="line.1980"></a>
<FONT color="green">1981</FONT>             *      Java2D handles poorly supported image types&lt;/a&gt;<a name="line.1981"></a>
<FONT color="green">1982</FONT>             * @see &lt;a<a name="line.1982"></a>
<FONT color="green">1983</FONT>             *      href="http://code.google.com/p/java-image-scaling/source/browse/trunk/src/main/java/com/mortennobel/imagescaling/MultiStepRescaleOp.java"&gt;Thanks<a name="line.1983"></a>
<FONT color="green">1984</FONT>             *      to Morten Nobel for implementation hint&lt;/a&gt;<a name="line.1984"></a>
<FONT color="green">1985</FONT>             */<a name="line.1985"></a>
<FONT color="green">1986</FONT>            protected static BufferedImage createOptimalImage(BufferedImage src,<a name="line.1986"></a>
<FONT color="green">1987</FONT>                            int width, int height) throws IllegalArgumentException {<a name="line.1987"></a>
<FONT color="green">1988</FONT>                    if (width &lt; 0 || height &lt; 0)<a name="line.1988"></a>
<FONT color="green">1989</FONT>                            throw new IllegalArgumentException("width [" + width<a name="line.1989"></a>
<FONT color="green">1990</FONT>                                            + "] and height [" + height + "] must be &gt;= 0");<a name="line.1990"></a>
<FONT color="green">1991</FONT>    <a name="line.1991"></a>
<FONT color="green">1992</FONT>                    return new BufferedImage(<a name="line.1992"></a>
<FONT color="green">1993</FONT>                                    width,<a name="line.1993"></a>
<FONT color="green">1994</FONT>                                    height,<a name="line.1994"></a>
<FONT color="green">1995</FONT>                                    (src.getTransparency() == Transparency.OPAQUE ? BufferedImage.TYPE_INT_RGB<a name="line.1995"></a>
<FONT color="green">1996</FONT>                                                    : BufferedImage.TYPE_INT_ARGB));<a name="line.1996"></a>
<FONT color="green">1997</FONT>            }<a name="line.1997"></a>
<FONT color="green">1998</FONT>    <a name="line.1998"></a>
<FONT color="green">1999</FONT>            /**<a name="line.1999"></a>
<FONT color="green">2000</FONT>             * Used to copy a {@link BufferedImage} from a non-optimal type into a new<a name="line.2000"></a>
<FONT color="green">2001</FONT>             * {@link BufferedImage} instance of an optimal type (RGB or ARGB). If<a name="line.2001"></a>
<FONT color="green">2002</FONT>             * &lt;code&gt;src&lt;/code&gt; is already of an optimal type, then it is returned<a name="line.2002"></a>
<FONT color="green">2003</FONT>             * unmodified.<a name="line.2003"></a>
<FONT color="green">2004</FONT>             * &lt;p/&gt;<a name="line.2004"></a>
<FONT color="green">2005</FONT>             * This method is meant to be used by any calling code (imgscalr's or<a name="line.2005"></a>
<FONT color="green">2006</FONT>             * otherwise) to convert any inbound image from a poorly supported image<a name="line.2006"></a>
<FONT color="green">2007</FONT>             * type into the 2 most well-supported image types in Java2D (<a name="line.2007"></a>
<FONT color="green">2008</FONT>             * {@link BufferedImage#TYPE_INT_RGB} or {@link BufferedImage#TYPE_INT_ARGB}<a name="line.2008"></a>
<FONT color="green">2009</FONT>             * ) in order to ensure all subsequent graphics operations are performed as<a name="line.2009"></a>
<FONT color="green">2010</FONT>             * efficiently and correctly as possible.<a name="line.2010"></a>
<FONT color="green">2011</FONT>             * &lt;p/&gt;<a name="line.2011"></a>
<FONT color="green">2012</FONT>             * When using Java2D to work with image types that are not well supported,<a name="line.2012"></a>
<FONT color="green">2013</FONT>             * the results can be anything from exceptions bubbling up from the depths<a name="line.2013"></a>
<FONT color="green">2014</FONT>             * of Java2D to images being completely corrupted and just returned as solid<a name="line.2014"></a>
<FONT color="green">2015</FONT>             * black.<a name="line.2015"></a>
<FONT color="green">2016</FONT>             * <a name="line.2016"></a>
<FONT color="green">2017</FONT>             * @param src<a name="line.2017"></a>
<FONT color="green">2018</FONT>             *            The image to copy (if necessary) into an optimally typed<a name="line.2018"></a>
<FONT color="green">2019</FONT>             *            {@link BufferedImage}.<a name="line.2019"></a>
<FONT color="green">2020</FONT>             * <a name="line.2020"></a>
<FONT color="green">2021</FONT>             * @return a representation of the &lt;code&gt;src&lt;/code&gt; image in an optimally<a name="line.2021"></a>
<FONT color="green">2022</FONT>             *         typed {@link BufferedImage}, otherwise &lt;code&gt;src&lt;/code&gt; if it was<a name="line.2022"></a>
<FONT color="green">2023</FONT>             *         already of an optimal type.<a name="line.2023"></a>
<FONT color="green">2024</FONT>             * <a name="line.2024"></a>
<FONT color="green">2025</FONT>             * @throws IllegalArgumentException<a name="line.2025"></a>
<FONT color="green">2026</FONT>             *             if &lt;code&gt;src&lt;/code&gt; is &lt;code&gt;null&lt;/code&gt;.<a name="line.2026"></a>
<FONT color="green">2027</FONT>             */<a name="line.2027"></a>
<FONT color="green">2028</FONT>            protected static BufferedImage copyToOptimalImage(BufferedImage src)<a name="line.2028"></a>
<FONT color="green">2029</FONT>                            throws IllegalArgumentException {<a name="line.2029"></a>
<FONT color="green">2030</FONT>                    if (src == null)<a name="line.2030"></a>
<FONT color="green">2031</FONT>                            throw new IllegalArgumentException("src cannot be null");<a name="line.2031"></a>
<FONT color="green">2032</FONT>    <a name="line.2032"></a>
<FONT color="green">2033</FONT>                    // Calculate the type depending on the presence of alpha.<a name="line.2033"></a>
<FONT color="green">2034</FONT>                    int type = (src.getTransparency() == Transparency.OPAQUE ? BufferedImage.TYPE_INT_RGB<a name="line.2034"></a>
<FONT color="green">2035</FONT>                                    : BufferedImage.TYPE_INT_ARGB);<a name="line.2035"></a>
<FONT color="green">2036</FONT>                    BufferedImage result = new BufferedImage(src.getWidth(),<a name="line.2036"></a>
<FONT color="green">2037</FONT>                                    src.getHeight(), type);<a name="line.2037"></a>
<FONT color="green">2038</FONT>    <a name="line.2038"></a>
<FONT color="green">2039</FONT>                    // Render the src image into our new optimal source.<a name="line.2039"></a>
<FONT color="green">2040</FONT>                    Graphics g = result.getGraphics();<a name="line.2040"></a>
<FONT color="green">2041</FONT>                    g.drawImage(src, 0, 0, null);<a name="line.2041"></a>
<FONT color="green">2042</FONT>                    g.dispose();<a name="line.2042"></a>
<FONT color="green">2043</FONT>    <a name="line.2043"></a>
<FONT color="green">2044</FONT>                    return result;<a name="line.2044"></a>
<FONT color="green">2045</FONT>            }<a name="line.2045"></a>
<FONT color="green">2046</FONT>    <a name="line.2046"></a>
<FONT color="green">2047</FONT>            /**<a name="line.2047"></a>
<FONT color="green">2048</FONT>             * Used to determine the scaling {@link Method} that is best suited for<a name="line.2048"></a>
<FONT color="green">2049</FONT>             * scaling the image to the targeted dimensions.<a name="line.2049"></a>
<FONT color="green">2050</FONT>             * &lt;p/&gt;<a name="line.2050"></a>
<FONT color="green">2051</FONT>             * This method is intended to be used to select a specific scaling<a name="line.2051"></a>
<FONT color="green">2052</FONT>             * {@link Method} when a {@link Method#AUTOMATIC} method is specified. This<a name="line.2052"></a>
<FONT color="green">2053</FONT>             * method utilizes the {@link Scalr#THRESHOLD_QUALITY_BALANCED} and<a name="line.2053"></a>
<FONT color="green">2054</FONT>             * {@link Scalr#THRESHOLD_BALANCED_SPEED} thresholds when selecting which<a name="line.2054"></a>
<FONT color="green">2055</FONT>             * method should be used by comparing the primary dimension (width or<a name="line.2055"></a>
<FONT color="green">2056</FONT>             * height) against the threshold and seeing where the image falls. The<a name="line.2056"></a>
<FONT color="green">2057</FONT>             * primary dimension is determined by looking at the orientation of the<a name="line.2057"></a>
<FONT color="green">2058</FONT>             * image: landscape or square images use their width and portrait-oriented<a name="line.2058"></a>
<FONT color="green">2059</FONT>             * images use their height.<a name="line.2059"></a>
<FONT color="green">2060</FONT>             * <a name="line.2060"></a>
<FONT color="green">2061</FONT>             * @param targetWidth<a name="line.2061"></a>
<FONT color="green">2062</FONT>             *            The target width for the scaled image.<a name="line.2062"></a>
<FONT color="green">2063</FONT>             * @param targetHeight<a name="line.2063"></a>
<FONT color="green">2064</FONT>             *            The target height for the scaled image.<a name="line.2064"></a>
<FONT color="green">2065</FONT>             * @param ratio<a name="line.2065"></a>
<FONT color="green">2066</FONT>             *            A height/width ratio used to determine the orientation of the<a name="line.2066"></a>
<FONT color="green">2067</FONT>             *            image so the primary dimension (width or height) can be<a name="line.2067"></a>
<FONT color="green">2068</FONT>             *            selected to test if it is greater than or less than a<a name="line.2068"></a>
<FONT color="green">2069</FONT>             *            particular threshold.<a name="line.2069"></a>
<FONT color="green">2070</FONT>             * <a name="line.2070"></a>
<FONT color="green">2071</FONT>             * @return the fastest {@link Method} suited for scaling the image to the<a name="line.2071"></a>
<FONT color="green">2072</FONT>             *         specified dimensions while maintaining a good-looking result.<a name="line.2072"></a>
<FONT color="green">2073</FONT>             */<a name="line.2073"></a>
<FONT color="green">2074</FONT>            protected static Method determineScalingMethod(int targetWidth,<a name="line.2074"></a>
<FONT color="green">2075</FONT>                            int targetHeight, float ratio) {<a name="line.2075"></a>
<FONT color="green">2076</FONT>                    // Get the primary dimension based on the orientation of the image<a name="line.2076"></a>
<FONT color="green">2077</FONT>                    int length = (ratio &lt;= 1 ? targetWidth : targetHeight);<a name="line.2077"></a>
<FONT color="green">2078</FONT>    <a name="line.2078"></a>
<FONT color="green">2079</FONT>                    // Default to speed<a name="line.2079"></a>
<FONT color="green">2080</FONT>                    Method result = Method.SPEED;<a name="line.2080"></a>
<FONT color="green">2081</FONT>    <a name="line.2081"></a>
<FONT color="green">2082</FONT>                    // Figure out which scalingMethod should be used<a name="line.2082"></a>
<FONT color="green">2083</FONT>                    if (length &lt;= Scalr.THRESHOLD_QUALITY_BALANCED)<a name="line.2083"></a>
<FONT color="green">2084</FONT>                            result = Method.QUALITY;<a name="line.2084"></a>
<FONT color="green">2085</FONT>                    else if (length &lt;= Scalr.THRESHOLD_BALANCED_SPEED)<a name="line.2085"></a>
<FONT color="green">2086</FONT>                            result = Method.BALANCED;<a name="line.2086"></a>
<FONT color="green">2087</FONT>    <a name="line.2087"></a>
<FONT color="green">2088</FONT>                    if (DEBUG)<a name="line.2088"></a>
<FONT color="green">2089</FONT>                            log(2, "AUTOMATIC scaling method selected: %s", result.name());<a name="line.2089"></a>
<FONT color="green">2090</FONT>    <a name="line.2090"></a>
<FONT color="green">2091</FONT>                    return result;<a name="line.2091"></a>
<FONT color="green">2092</FONT>            }<a name="line.2092"></a>
<FONT color="green">2093</FONT>    <a name="line.2093"></a>
<FONT color="green">2094</FONT>            /**<a name="line.2094"></a>
<FONT color="green">2095</FONT>             * Used to implement a straight-forward image-scaling operation using Java<a name="line.2095"></a>
<FONT color="green">2096</FONT>             * 2D.<a name="line.2096"></a>
<FONT color="green">2097</FONT>             * &lt;p/&gt;<a name="line.2097"></a>
<FONT color="green">2098</FONT>             * This method uses the Oracle-encouraged method of<a name="line.2098"></a>
<FONT color="green">2099</FONT>             * &lt;code&gt;Graphics2D.drawImage(...)&lt;/code&gt; to scale the given image with the<a name="line.2099"></a>
<FONT color="green">2100</FONT>             * given interpolation hint.<a name="line.2100"></a>
<FONT color="green">2101</FONT>             * <a name="line.2101"></a>
<FONT color="green">2102</FONT>             * @param src<a name="line.2102"></a>
<FONT color="green">2103</FONT>             *            The image that will be scaled.<a name="line.2103"></a>
<FONT color="green">2104</FONT>             * @param targetWidth<a name="line.2104"></a>
<FONT color="green">2105</FONT>             *            The target width for the scaled image.<a name="line.2105"></a>
<FONT color="green">2106</FONT>             * @param targetHeight<a name="line.2106"></a>
<FONT color="green">2107</FONT>             *            The target height for the scaled image.<a name="line.2107"></a>
<FONT color="green">2108</FONT>             * @param interpolationHintValue<a name="line.2108"></a>
<FONT color="green">2109</FONT>             *            The {@link RenderingHints} interpolation value used to<a name="line.2109"></a>
<FONT color="green">2110</FONT>             *            indicate the method that {@link Graphics2D} should use when<a name="line.2110"></a>
<FONT color="green">2111</FONT>             *            scaling the image.<a name="line.2111"></a>
<FONT color="green">2112</FONT>             * <a name="line.2112"></a>
<FONT color="green">2113</FONT>             * @return the result of scaling the original &lt;code&gt;src&lt;/code&gt; to the given<a name="line.2113"></a>
<FONT color="green">2114</FONT>             *         dimensions using the given interpolation method.<a name="line.2114"></a>
<FONT color="green">2115</FONT>             */<a name="line.2115"></a>
<FONT color="green">2116</FONT>            protected static BufferedImage scaleImage(BufferedImage src,<a name="line.2116"></a>
<FONT color="green">2117</FONT>                            int targetWidth, int targetHeight, Object interpolationHintValue) {<a name="line.2117"></a>
<FONT color="green">2118</FONT>                    // Setup the rendering resources to match the source image's<a name="line.2118"></a>
<FONT color="green">2119</FONT>                    BufferedImage result = createOptimalImage(src, targetWidth,<a name="line.2119"></a>
<FONT color="green">2120</FONT>                                    targetHeight);<a name="line.2120"></a>
<FONT color="green">2121</FONT>                    Graphics2D resultGraphics = result.createGraphics();<a name="line.2121"></a>
<FONT color="green">2122</FONT>    <a name="line.2122"></a>
<FONT color="green">2123</FONT>                    // Scale the image to the new buffer using the specified rendering hint.<a name="line.2123"></a>
<FONT color="green">2124</FONT>                    resultGraphics.setRenderingHint(RenderingHints.KEY_INTERPOLATION,<a name="line.2124"></a>
<FONT color="green">2125</FONT>                                    interpolationHintValue);<a name="line.2125"></a>
<FONT color="green">2126</FONT>                    resultGraphics.drawImage(src, 0, 0, targetWidth, targetHeight, null);<a name="line.2126"></a>
<FONT color="green">2127</FONT>    <a name="line.2127"></a>
<FONT color="green">2128</FONT>                    // Just to be clean, explicitly dispose our temporary graphics object<a name="line.2128"></a>
<FONT color="green">2129</FONT>                    resultGraphics.dispose();<a name="line.2129"></a>
<FONT color="green">2130</FONT>    <a name="line.2130"></a>
<FONT color="green">2131</FONT>                    // Return the scaled image to the caller.<a name="line.2131"></a>
<FONT color="green">2132</FONT>                    return result;<a name="line.2132"></a>
<FONT color="green">2133</FONT>            }<a name="line.2133"></a>
<FONT color="green">2134</FONT>    <a name="line.2134"></a>
<FONT color="green">2135</FONT>            /**<a name="line.2135"></a>
<FONT color="green">2136</FONT>             * Used to implement Chris Campbell's incremental-scaling algorithm: &lt;a<a name="line.2136"></a>
<FONT color="green">2137</FONT>             * href="http://today.java.net/pub/a/today/2007/04/03/perils<a name="line.2137"></a>
<FONT color="green">2138</FONT>             * -of-image-getscaledinstance<a name="line.2138"></a>
<FONT color="green">2139</FONT>             * .html"&gt;http://today.java.net/pub/a/today/2007/04/03/perils<a name="line.2139"></a>
<FONT color="green">2140</FONT>             * -of-image-getscaledinstance.html&lt;/a&gt;.<a name="line.2140"></a>
<FONT color="green">2141</FONT>             * &lt;p/&gt;<a name="line.2141"></a>
<FONT color="green">2142</FONT>             * Modifications to the original algorithm are variable names and comments<a name="line.2142"></a>
<FONT color="green">2143</FONT>             * added for clarity and the hard-coding of using BICUBIC interpolation as<a name="line.2143"></a>
<FONT color="green">2144</FONT>             * well as the explicit "flush()" operation on the interim BufferedImage<a name="line.2144"></a>
<FONT color="green">2145</FONT>             * instances to avoid resource leaking.<a name="line.2145"></a>
<FONT color="green">2146</FONT>             * <a name="line.2146"></a>
<FONT color="green">2147</FONT>             * @param src<a name="line.2147"></a>
<FONT color="green">2148</FONT>             *            The image that will be scaled.<a name="line.2148"></a>
<FONT color="green">2149</FONT>             * @param targetWidth<a name="line.2149"></a>
<FONT color="green">2150</FONT>             *            The target width for the scaled image.<a name="line.2150"></a>
<FONT color="green">2151</FONT>             * @param targetHeight<a name="line.2151"></a>
<FONT color="green">2152</FONT>             *            The target height for the scaled image.<a name="line.2152"></a>
<FONT color="green">2153</FONT>             * @param interpolationHintValue<a name="line.2153"></a>
<FONT color="green">2154</FONT>             *            The {@link RenderingHints} interpolation value used to<a name="line.2154"></a>
<FONT color="green">2155</FONT>             *            indicate the method that {@link Graphics2D} should use when<a name="line.2155"></a>
<FONT color="green">2156</FONT>             *            scaling the image.<a name="line.2156"></a>
<FONT color="green">2157</FONT>             * <a name="line.2157"></a>
<FONT color="green">2158</FONT>             * @return an image scaled to the given dimensions using the given rendering<a name="line.2158"></a>
<FONT color="green">2159</FONT>             *         hint.<a name="line.2159"></a>
<FONT color="green">2160</FONT>             */<a name="line.2160"></a>
<FONT color="green">2161</FONT>            protected static BufferedImage scaleImageIncrementally(BufferedImage src,<a name="line.2161"></a>
<FONT color="green">2162</FONT>                            int targetWidth, int targetHeight, Object interpolationHintValue) {<a name="line.2162"></a>
<FONT color="green">2163</FONT>                    boolean hasReassignedSrc = false;<a name="line.2163"></a>
<FONT color="green">2164</FONT>                    int incrementCount = 0;<a name="line.2164"></a>
<FONT color="green">2165</FONT>                    int currentWidth = src.getWidth();<a name="line.2165"></a>
<FONT color="green">2166</FONT>                    int currentHeight = src.getHeight();<a name="line.2166"></a>
<FONT color="green">2167</FONT>    <a name="line.2167"></a>
<FONT color="green">2168</FONT>                    do {<a name="line.2168"></a>
<FONT color="green">2169</FONT>                            /*<a name="line.2169"></a>
<FONT color="green">2170</FONT>                             * If the current width is bigger than our target, cut it in half<a name="line.2170"></a>
<FONT color="green">2171</FONT>                             * and sample again.<a name="line.2171"></a>
<FONT color="green">2172</FONT>                             */<a name="line.2172"></a>
<FONT color="green">2173</FONT>                            if (currentWidth &gt; targetWidth) {<a name="line.2173"></a>
<FONT color="green">2174</FONT>                                    currentWidth /= 2;<a name="line.2174"></a>
<FONT color="green">2175</FONT>    <a name="line.2175"></a>
<FONT color="green">2176</FONT>                                    /*<a name="line.2176"></a>
<FONT color="green">2177</FONT>                                     * If we cut the width too far it means we are on our last<a name="line.2177"></a>
<FONT color="green">2178</FONT>                                     * iteration. Just set it to the target width and finish up.<a name="line.2178"></a>
<FONT color="green">2179</FONT>                                     */<a name="line.2179"></a>
<FONT color="green">2180</FONT>                                    if (currentWidth &lt; targetWidth)<a name="line.2180"></a>
<FONT color="green">2181</FONT>                                            currentWidth = targetWidth;<a name="line.2181"></a>
<FONT color="green">2182</FONT>                            }<a name="line.2182"></a>
<FONT color="green">2183</FONT>    <a name="line.2183"></a>
<FONT color="green">2184</FONT>                            /*<a name="line.2184"></a>
<FONT color="green">2185</FONT>                             * If the current height is bigger than our target, cut it in half<a name="line.2185"></a>
<FONT color="green">2186</FONT>                             * and sample again.<a name="line.2186"></a>
<FONT color="green">2187</FONT>                             */<a name="line.2187"></a>
<FONT color="green">2188</FONT>    <a name="line.2188"></a>
<FONT color="green">2189</FONT>                            if (currentHeight &gt; targetHeight) {<a name="line.2189"></a>
<FONT color="green">2190</FONT>                                    currentHeight /= 2;<a name="line.2190"></a>
<FONT color="green">2191</FONT>    <a name="line.2191"></a>
<FONT color="green">2192</FONT>                                    /*<a name="line.2192"></a>
<FONT color="green">2193</FONT>                                     * If we cut the height too far it means we are on our last<a name="line.2193"></a>
<FONT color="green">2194</FONT>                                     * iteration. Just set it to the target height and finish up.<a name="line.2194"></a>
<FONT color="green">2195</FONT>                                     */<a name="line.2195"></a>
<FONT color="green">2196</FONT>    <a name="line.2196"></a>
<FONT color="green">2197</FONT>                                    if (currentHeight &lt; targetHeight)<a name="line.2197"></a>
<FONT color="green">2198</FONT>                                            currentHeight = targetHeight;<a name="line.2198"></a>
<FONT color="green">2199</FONT>                            }<a name="line.2199"></a>
<FONT color="green">2200</FONT>    <a name="line.2200"></a>
<FONT color="green">2201</FONT>                            // Render the incremental scaled image.<a name="line.2201"></a>
<FONT color="green">2202</FONT>                            BufferedImage incrementalImage = scaleImage(src, currentWidth,<a name="line.2202"></a>
<FONT color="green">2203</FONT>                                            currentHeight, interpolationHintValue);<a name="line.2203"></a>
<FONT color="green">2204</FONT>    <a name="line.2204"></a>
<FONT color="green">2205</FONT>                            /*<a name="line.2205"></a>
<FONT color="green">2206</FONT>                             * Before re-assigning our interim (partially scaled)<a name="line.2206"></a>
<FONT color="green">2207</FONT>                             * incrementalImage to be the new src image before we iterate around<a name="line.2207"></a>
<FONT color="green">2208</FONT>                             * again to process it down further, we want to flush() the previous<a name="line.2208"></a>
<FONT color="green">2209</FONT>                             * src image IF (and only IF) it was one of our own temporary<a name="line.2209"></a>
<FONT color="green">2210</FONT>                             * BufferedImages created during this incremental down-sampling<a name="line.2210"></a>
<FONT color="green">2211</FONT>                             * cycle. If it wasn't one of ours, then it was the original<a name="line.2211"></a>
<FONT color="green">2212</FONT>                             * caller-supplied BufferedImage in which case we don't want to<a name="line.2212"></a>
<FONT color="green">2213</FONT>                             * flush() it and just leave it alone.<a name="line.2213"></a>
<FONT color="green">2214</FONT>                             */<a name="line.2214"></a>
<FONT color="green">2215</FONT>                            if (hasReassignedSrc)<a name="line.2215"></a>
<FONT color="green">2216</FONT>                                    src.flush();<a name="line.2216"></a>
<FONT color="green">2217</FONT>    <a name="line.2217"></a>
<FONT color="green">2218</FONT>                            /*<a name="line.2218"></a>
<FONT color="green">2219</FONT>                             * Now treat our incremental partially scaled image as the src image<a name="line.2219"></a>
<FONT color="green">2220</FONT>                             * and cycle through our loop again to do another incremental<a name="line.2220"></a>
<FONT color="green">2221</FONT>                             * scaling of it (if necessary).<a name="line.2221"></a>
<FONT color="green">2222</FONT>                             */<a name="line.2222"></a>
<FONT color="green">2223</FONT>                            src = incrementalImage;<a name="line.2223"></a>
<FONT color="green">2224</FONT>    <a name="line.2224"></a>
<FONT color="green">2225</FONT>                            /*<a name="line.2225"></a>
<FONT color="green">2226</FONT>                             * Keep track of us re-assigning the original caller-supplied source<a name="line.2226"></a>
<FONT color="green">2227</FONT>                             * image with one of our interim BufferedImages so we know when to<a name="line.2227"></a>
<FONT color="green">2228</FONT>                             * explicitly flush the interim "src" on the next cycle through.<a name="line.2228"></a>
<FONT color="green">2229</FONT>                             */<a name="line.2229"></a>
<FONT color="green">2230</FONT>                            hasReassignedSrc = true;<a name="line.2230"></a>
<FONT color="green">2231</FONT>    <a name="line.2231"></a>
<FONT color="green">2232</FONT>                            // Track how many times we go through this cycle to scale the image.<a name="line.2232"></a>
<FONT color="green">2233</FONT>                            incrementCount++;<a name="line.2233"></a>
<FONT color="green">2234</FONT>                    } while (currentWidth != targetWidth || currentHeight != targetHeight);<a name="line.2234"></a>
<FONT color="green">2235</FONT>    <a name="line.2235"></a>
<FONT color="green">2236</FONT>                    if (DEBUG)<a name="line.2236"></a>
<FONT color="green">2237</FONT>                            log(2, "Incrementally Scaled Image in %d steps.", incrementCount);<a name="line.2237"></a>
<FONT color="green">2238</FONT>    <a name="line.2238"></a>
<FONT color="green">2239</FONT>                    /*<a name="line.2239"></a>
<FONT color="green">2240</FONT>                     * Once the loop has exited, the src image argument is now our scaled<a name="line.2240"></a>
<FONT color="green">2241</FONT>                     * result image that we want to return.<a name="line.2241"></a>
<FONT color="green">2242</FONT>                     */<a name="line.2242"></a>
<FONT color="green">2243</FONT>                    return src;<a name="line.2243"></a>
<FONT color="green">2244</FONT>            }<a name="line.2244"></a>
<FONT color="green">2245</FONT>    }<a name="line.2245"></a>




























































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